diff --git a/Makefile b/Makefile
index 5ed74409122..13a28b9797c 100644
--- a/Makefile
+++ b/Makefile
@@ -111,7 +111,6 @@ LDXX_helgrind = $(DEFAULT_CXX)
 CPPFLAGS_helgrind = -O0
 LDFLAGS_helgrind = -rdynamic
 DEFINES_helgrind = _DEBUG DEBUG
-DEFINES_helgrind += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=20
 
 VALID_CONFIG_asan-noleaks = 1
 REQUIRE_CUSTOM_LIBRARIES_asan-noleaks = 1
@@ -121,7 +120,6 @@ LD_asan-noleaks = clang
 LDXX_asan-noleaks = clang++
 CPPFLAGS_asan-noleaks = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_asan-noleaks = -fsanitize=address
-DEFINES_asan-noleaks += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=3
 
 VALID_CONFIG_asan-trace-cmp = 1
 REQUIRE_CUSTOM_LIBRARIES_asan-trace-cmp = 1
@@ -131,7 +129,6 @@ LD_asan-trace-cmp = clang
 LDXX_asan-trace-cmp = clang++
 CPPFLAGS_asan-trace-cmp = -O0 -fsanitize-coverage=edge -fsanitize-coverage=trace-cmp -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_asan-trace-cmp = -fsanitize=address
-DEFINES_asan-trace-cmp += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=3
 
 VALID_CONFIG_dbg = 1
 CC_dbg = $(DEFAULT_CC)
@@ -166,7 +163,6 @@ LDXX_memcheck = $(DEFAULT_CXX)
 CPPFLAGS_memcheck = -O0
 LDFLAGS_memcheck = -rdynamic
 DEFINES_memcheck = _DEBUG DEBUG
-DEFINES_memcheck += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=10
 
 VALID_CONFIG_asan = 1
 REQUIRE_CUSTOM_LIBRARIES_asan = 1
@@ -176,7 +172,6 @@ LD_asan = clang
 LDXX_asan = clang++
 CPPFLAGS_asan = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_asan = -fsanitize=address
-DEFINES_asan += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=3
 
 VALID_CONFIG_tsan = 1
 REQUIRE_CUSTOM_LIBRARIES_tsan = 1
@@ -187,7 +182,6 @@ LDXX_tsan = clang++
 CPPFLAGS_tsan = -O0 -fsanitize=thread -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_tsan = -fsanitize=thread
 DEFINES_tsan = GRPC_TSAN
-DEFINES_tsan += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=5
 
 VALID_CONFIG_ubsan = 1
 REQUIRE_CUSTOM_LIBRARIES_ubsan = 1
@@ -198,7 +192,6 @@ LDXX_ubsan = clang++
 CPPFLAGS_ubsan = -O0 -fsanitize-coverage=edge -fsanitize=undefined,unsigned-integer-overflow -fno-omit-frame-pointer -Wno-unused-command-line-argument -Wvarargs
 LDFLAGS_ubsan = -fsanitize=undefined,unsigned-integer-overflow
 DEFINES_ubsan = NDEBUG
-DEFINES_ubsan += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=1.5
 
 VALID_CONFIG_msan = 1
 REQUIRE_CUSTOM_LIBRARIES_msan = 1
@@ -209,7 +202,6 @@ LDXX_msan = clang++
 CPPFLAGS_msan = -O0 -fsanitize-coverage=edge -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -DGTEST_HAS_TR1_TUPLE=0 -DGTEST_USE_OWN_TR1_TUPLE=1 -Wno-unused-command-line-argument -fPIE -pie -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_msan = -fsanitize=memory -DGTEST_HAS_TR1_TUPLE=0 -DGTEST_USE_OWN_TR1_TUPLE=1 -fPIE -pie $(if $(JENKINS_BUILD),-Wl$(comma)-Ttext-segment=0x7e0000000000,)
 DEFINES_msan = NDEBUG
-DEFINES_msan += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=4
 
 VALID_CONFIG_mutrace = 1
 CC_mutrace = $(DEFAULT_CC)
diff --git a/build.yaml b/build.yaml
index 59678324c26..944d4ecee66 100644
--- a/build.yaml
+++ b/build.yaml
@@ -3757,7 +3757,6 @@ configs:
     test_environ:
       ASAN_OPTIONS: detect_leaks=1:color=always
       LSAN_OPTIONS: suppressions=tools/lsan_suppressions.txt:report_objects=1
-    timeout_multiplier: 3
   asan-noleaks:
     CC: clang
     CPPFLAGS: -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer
@@ -3769,7 +3768,6 @@ configs:
     compile_the_world: true
     test_environ:
       ASAN_OPTIONS: detect_leaks=0:color=always
-    timeout_multiplier: 3
   asan-trace-cmp:
     CC: clang
     CPPFLAGS: -O0 -fsanitize-coverage=edge -fsanitize-coverage=trace-cmp -fsanitize=address
@@ -3782,7 +3780,6 @@ configs:
     test_environ:
       ASAN_OPTIONS: detect_leaks=1:color=always
       LSAN_OPTIONS: suppressions=tools/lsan_suppressions.txt:report_objects=1
-    timeout_multiplier: 3
   basicprof:
     CPPFLAGS: -O2 -DGRPC_BASIC_PROFILER -DGRPC_TIMERS_RDTSC
     DEFINES: NDEBUG
@@ -3801,13 +3798,11 @@ configs:
     CPPFLAGS: -O0
     DEFINES: _DEBUG DEBUG
     LDFLAGS: -rdynamic
-    timeout_multiplier: 20
     valgrind: --tool=helgrind
   memcheck:
     CPPFLAGS: -O0
     DEFINES: _DEBUG DEBUG
     LDFLAGS: -rdynamic
-    timeout_multiplier: 10
     valgrind: --tool=memcheck --leak-check=full
   msan:
     CC: clang
@@ -3821,7 +3816,6 @@ configs:
       -fPIE -pie $(if $(JENKINS_BUILD),-Wl$(comma)-Ttext-segment=0x7e0000000000,)
     LDXX: clang++
     compile_the_world: true
-    timeout_multiplier: 4
   mutrace:
     CPPFLAGS: -O3 -fno-omit-frame-pointer
     DEFINES: NDEBUG
@@ -3844,7 +3838,6 @@ configs:
     compile_the_world: true
     test_environ:
       TSAN_OPTIONS: suppressions=tools/tsan_suppressions.txt:halt_on_error=1:second_deadlock_stack=1
-    timeout_multiplier: 5
   ubsan:
     CC: clang
     CPPFLAGS: -O0 -fsanitize-coverage=edge -fsanitize=undefined,unsigned-integer-overflow
@@ -3857,7 +3850,6 @@ configs:
     compile_the_world: true
     test_environ:
       UBSAN_OPTIONS: halt_on_error=1:print_stacktrace=1
-    timeout_multiplier: 1.5
 defaults:
   benchmark:
     CPPFLAGS: -Ithird_party/benchmark/include -DHAVE_POSIX_REGEX
diff --git a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
index 43b91a072b8..599f840567a 100644
--- a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
+++ b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
@@ -54,7 +54,7 @@
 static void drain_cq(grpc_completion_queue *cq) {
   grpc_event ev;
   do {
-    ev = grpc_completion_queue_next(cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL);
+    ev = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(5), NULL);
   } while (ev.type != GRPC_QUEUE_SHUTDOWN);
 }
 
@@ -97,7 +97,7 @@ static void drain_cq(grpc_completion_queue *cq) {
   grpc_slice_from_copied_string("hello world");
   grpc_byte_buffer *request_payload =
   grpc_raw_byte_buffer_create(&request_payload_slice, 1);
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(5);
   grpc_metadata meta_c[2] = {
     {"key1", "val1", 4, 0, {{NULL, NULL, NULL, NULL}}},
     {"key2", "val2", 4, 0, {{NULL, NULL, NULL, NULL}}}};
diff --git a/templates/Makefile.template b/templates/Makefile.template
index 6f4db26f2bf..10d7861f03d 100644
--- a/templates/Makefile.template
+++ b/templates/Makefile.template
@@ -135,9 +135,6 @@
   ${arg}_${name} = ${args.get(arg)}
   %   endif
   %  endfor
-  %  if args.get('timeout_multiplier', 1) != 1:
-  DEFINES_${name} += GRPC_TEST_SLOWDOWN_BUILD_FACTOR=${args.timeout_multiplier}
-  %  endif
 
   % endfor
 
diff --git a/test/core/bad_client/bad_client.c b/test/core/bad_client/bad_client.c
index b7e7606b184..fdedfe284e2 100644
--- a/test/core/bad_client/bad_client.c
+++ b/test/core/bad_client/bad_client.c
@@ -160,7 +160,7 @@ void grpc_run_bad_client_test(
 
   /* Await completion */
   GPR_ASSERT(
-      gpr_event_wait(&a.done_write, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
+      gpr_event_wait(&a.done_write, grpc_timeout_seconds_to_deadline(5)));
 
   if (flags & GRPC_BAD_CLIENT_DISCONNECT) {
     grpc_endpoint_shutdown(&exec_ctx, sfd.client,
@@ -170,7 +170,7 @@ void grpc_run_bad_client_test(
     sfd.client = NULL;
   }
 
-  GPR_ASSERT(gpr_event_wait(&a.done_thd, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
+  GPR_ASSERT(gpr_event_wait(&a.done_thd, grpc_timeout_seconds_to_deadline(5)));
 
   if (sfd.client != NULL) {
     // Validate client stream, if requested.
@@ -186,7 +186,7 @@ void grpc_run_bad_client_test(
                          &read_done_closure);
       grpc_exec_ctx_finish(&exec_ctx);
       GPR_ASSERT(
-          gpr_event_wait(&args.read_done, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5)));
+          gpr_event_wait(&args.read_done, grpc_timeout_seconds_to_deadline(5)));
       grpc_slice_buffer_destroy_internal(&exec_ctx, &args.incoming);
     }
     // Shutdown.
@@ -197,7 +197,7 @@ void grpc_run_bad_client_test(
   }
   grpc_server_shutdown_and_notify(a.server, a.cq, NULL);
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 a.cq, NULL, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), NULL)
+                 a.cq, NULL, grpc_timeout_seconds_to_deadline(1), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(a.server);
   grpc_completion_queue_destroy(a.cq);
diff --git a/test/core/bad_client/tests/badreq.c b/test/core/bad_client/tests/badreq.c
index 5d9ffef3f20..7b22f880ab9 100644
--- a/test/core/bad_client/tests/badreq.c
+++ b/test/core/bad_client/tests/badreq.c
@@ -46,7 +46,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
                      void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_client/tests/connection_prefix.c b/test/core/bad_client/tests/connection_prefix.c
index bc5ed2e3934..42787ab90d4 100644
--- a/test/core/bad_client/tests/connection_prefix.c
+++ b/test/core/bad_client/tests/connection_prefix.c
@@ -38,7 +38,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
                      void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_client/tests/headers.c b/test/core/bad_client/tests/headers.c
index f872e5006a7..ab478217600 100644
--- a/test/core/bad_client/tests/headers.c
+++ b/test/core/bad_client/tests/headers.c
@@ -42,7 +42,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
                      void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_client/tests/initial_settings_frame.c b/test/core/bad_client/tests/initial_settings_frame.c
index b84b67a7e58..890efd89241 100644
--- a/test/core/bad_client/tests/initial_settings_frame.c
+++ b/test/core/bad_client/tests/initial_settings_frame.c
@@ -41,7 +41,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
                      void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_client/tests/simple_request.c b/test/core/bad_client/tests/simple_request.c
index db31ba6fb3c..608b849d415 100644
--- a/test/core/bad_client/tests/simple_request.c
+++ b/test/core/bad_client/tests/simple_request.c
@@ -130,7 +130,7 @@ static void failure_verifier(grpc_server *server, grpc_completion_queue *cq,
                              void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_client/tests/unknown_frame.c b/test/core/bad_client/tests/unknown_frame.c
index 4f483d21f2e..1d046994229 100644
--- a/test/core/bad_client/tests/unknown_frame.c
+++ b/test/core/bad_client/tests/unknown_frame.c
@@ -42,7 +42,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
                      void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_client/tests/window_overflow.c b/test/core/bad_client/tests/window_overflow.c
index 0d17dbe448e..7db85906f95 100644
--- a/test/core/bad_client/tests/window_overflow.c
+++ b/test/core/bad_client/tests/window_overflow.c
@@ -61,7 +61,7 @@ static void verifier(grpc_server *server, grpc_completion_queue *cq,
                      void *registered_method) {
   while (grpc_server_has_open_connections(server)) {
     GPR_ASSERT(grpc_completion_queue_next(
-                   cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(20), NULL)
+                   cq, grpc_timeout_milliseconds_to_deadline(20), NULL)
                    .type == GRPC_QUEUE_TIMEOUT);
   }
 }
diff --git a/test/core/bad_ssl/bad_ssl_test.c b/test/core/bad_ssl/bad_ssl_test.c
index 7a99f5789d9..bd855857066 100644
--- a/test/core/bad_ssl/bad_ssl_test.c
+++ b/test/core/bad_ssl/bad_ssl_test.c
@@ -60,7 +60,7 @@ static void run_test(const char *target, size_t nops) {
   grpc_slice details;
   grpc_status_code status;
   grpc_call_error error;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(5);
   grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
   cq_verifier *cqv = cq_verifier_create(cq);
 
diff --git a/test/core/bad_ssl/server_common.c b/test/core/bad_ssl/server_common.c
index 14b1892c2e9..6a4313eafd6 100644
--- a/test/core/bad_ssl/server_common.c
+++ b/test/core/bad_ssl/server_common.c
@@ -84,7 +84,7 @@ void bad_ssl_run(grpc_server *server) {
       gpr_log(GPR_INFO, "Shutting down due to SIGINT");
       grpc_server_shutdown_and_notify(server, cq, NULL);
       GPR_ASSERT(grpc_completion_queue_pluck(
-                     cq, NULL, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                     cq, NULL, grpc_timeout_seconds_to_deadline(5), NULL)
                      .type == GRPC_OP_COMPLETE);
       grpc_completion_queue_shutdown(cq);
       shutdown_started = 1;
diff --git a/test/core/census/mlog_test.c b/test/core/census/mlog_test.c
index 36e8a492fd5..e2605d12916 100644
--- a/test/core/census/mlog_test.c
+++ b/test/core/census/mlog_test.c
@@ -185,7 +185,7 @@ static void writer_thread(void* arg) {
             "written\n",
             args->index, records_written, args->num_records);
       }
-      gpr_sleep_until(GRPC_TIMEOUT_MILLIS_TO_DEADLINE(10));
+      gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(10));
     }
   }
   // Done. Decrement count and signal.
diff --git a/test/core/client_channel/lb_policies_test.c b/test/core/client_channel/lb_policies_test.c
index 82e928ed74d..efa4ad7ee6b 100644
--- a/test/core/client_channel/lb_policies_test.c
+++ b/test/core/client_channel/lb_policies_test.c
@@ -327,9 +327,10 @@ static request_sequences perform_request(servers_fixture *f,
                grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), NULL));
 
     s_idx = -1;
-    while ((ev = grpc_completion_queue_next(
-                f->cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(RETRY_TIMEOUT), NULL))
-               .type != GRPC_QUEUE_TIMEOUT) {
+    while (
+        (ev = grpc_completion_queue_next(
+             f->cq, grpc_timeout_milliseconds_to_deadline(RETRY_TIMEOUT), NULL))
+            .type != GRPC_QUEUE_TIMEOUT) {
       GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
       read_tag = ((int)(intptr_t)ev.tag);
       const grpc_connectivity_state conn_state =
@@ -406,9 +407,10 @@ static request_sequences perform_request(servers_fixture *f,
       }
     }
 
-    GPR_ASSERT(grpc_completion_queue_next(
-                   f->cq, GRPC_TIMEOUT_MILLIS_TO_DEADLINE(RETRY_TIMEOUT), NULL)
-                   .type == GRPC_QUEUE_TIMEOUT);
+    GPR_ASSERT(
+        grpc_completion_queue_next(
+            f->cq, grpc_timeout_milliseconds_to_deadline(RETRY_TIMEOUT), NULL)
+            .type == GRPC_QUEUE_TIMEOUT);
 
     grpc_metadata_array_destroy(&rdata->initial_metadata_recv);
     grpc_metadata_array_destroy(&rdata->trailing_metadata_recv);
@@ -563,7 +565,7 @@ static void test_ping() {
      READY is reached */
   while (state != GRPC_CHANNEL_READY) {
     grpc_channel_watch_connectivity_state(
-        client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f->cq, tag(99));
+        client, state, grpc_timeout_seconds_to_deadline(3), f->cq, tag(99));
     CQ_EXPECT_COMPLETION(cqv, tag(99), 1);
     cq_verify(cqv);
     state = grpc_channel_check_connectivity_state(client, 0);
diff --git a/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c b/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
index f0c6843a688..cfd37052de4 100644
--- a/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
+++ b/test/core/client_channel/resolvers/dns_resolver_connectivity_test.c
@@ -86,7 +86,7 @@ static void on_done(grpc_exec_ctx *exec_ctx, void *ev, grpc_error *error) {
 static bool wait_loop(int deadline_seconds, gpr_event *ev) {
   while (deadline_seconds) {
     gpr_log(GPR_DEBUG, "Test: waiting for %d more seconds", deadline_seconds);
-    if (gpr_event_wait(ev, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1))) return true;
+    if (gpr_event_wait(ev, grpc_timeout_seconds_to_deadline(1))) return true;
     deadline_seconds--;
 
     grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/test/core/end2end/connection_refused_test.c b/test/core/end2end/connection_refused_test.c
index 81a6b8720d4..16a3005539b 100644
--- a/test/core/end2end/connection_refused_test.c
+++ b/test/core/end2end/connection_refused_test.c
@@ -53,7 +53,7 @@ static void *tag(intptr_t i) { return (void *)i; }
 static void run_test(bool wait_for_ready, bool use_service_config) {
   grpc_channel *chan;
   grpc_call *call;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(2);
   grpc_completion_queue *cq;
   cq_verifier *cqv;
   grpc_op ops[6];
diff --git a/test/core/end2end/cq_verifier.c b/test/core/end2end/cq_verifier.c
index bc2d5888f0d..9b0106ec84c 100644
--- a/test/core/end2end/cq_verifier.c
+++ b/test/core/end2end/cq_verifier.c
@@ -249,7 +249,7 @@ static void fail_no_event_received(cq_verifier *v) {
 }
 
 void cq_verify(cq_verifier *v) {
-  const gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
+  const gpr_timespec deadline = grpc_timeout_seconds_to_deadline(10);
   while (v->first_expectation != NULL) {
     grpc_event ev = grpc_completion_queue_next(v->cq, deadline, NULL);
     if (ev.type == GRPC_QUEUE_TIMEOUT) {
diff --git a/test/core/end2end/cq_verifier_native.c b/test/core/end2end/cq_verifier_native.c
index b1fcb4beedd..e0f1d79e835 100644
--- a/test/core/end2end/cq_verifier_native.c
+++ b/test/core/end2end/cq_verifier_native.c
@@ -67,7 +67,7 @@ void cq_verifier_set_first_expectation(cq_verifier *v, expectation *e) {
 
 grpc_event cq_verifier_next_event(cq_verifier *v, int timeout_seconds) {
   const gpr_timespec deadline =
-      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(timeout_seconds);
+      grpc_timeout_seconds_to_deadline(timeout_seconds);
   return grpc_completion_queue_next(v->cq, deadline, NULL);
 }
 
diff --git a/test/core/end2end/dualstack_socket_test.c b/test/core/end2end/dualstack_socket_test.c
index 35b1b8c3d93..3623bd7be8b 100644
--- a/test/core/end2end/dualstack_socket_test.c
+++ b/test/core/end2end/dualstack_socket_test.c
@@ -57,7 +57,7 @@
 static void *tag(intptr_t i) { return (void *)i; }
 
 static gpr_timespec ms_from_now(int ms) {
-  return GRPC_TIMEOUT_MILLIS_TO_DEADLINE(ms);
+  return grpc_timeout_milliseconds_to_deadline(ms);
 }
 
 static void drain_cq(grpc_completion_queue *cq) {
@@ -261,7 +261,7 @@ void test_connect(const char *server_host, const char *client_host, int port,
   /* Destroy server. */
   grpc_server_shutdown_and_notify(server, cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(server);
   grpc_completion_queue_shutdown(cq);
diff --git a/test/core/end2end/fixtures/h2_full+trace.c b/test/core/end2end/fixtures/h2_full+trace.c
index 11a102a5765..01316376e03 100644
--- a/test/core/end2end/fixtures/h2_full+trace.c
+++ b/test/core/end2end/fixtures/h2_full+trace.c
@@ -117,9 +117,9 @@ int main(int argc, char **argv) {
   gpr_setenv("GRPC_TRACE", "doesnt-exist,http,all");
 
 #ifdef GRPC_POSIX_SOCKET
-  g_fixture_slowdown_factor = isatty(STDOUT_FILENO) ? 10.0 : 1.0;
+  g_fixture_slowdown_factor = isatty(STDOUT_FILENO) ? 10 : 1;
 #else
-  g_fixture_slowdown_factor = 10.0;
+  g_fixture_slowdown_factor = 10;
 #endif
 
   grpc_test_init(argc, argv);
diff --git a/test/core/end2end/fixtures/h2_sockpair+trace.c b/test/core/end2end/fixtures/h2_sockpair+trace.c
index 726ed8735c6..edf42a40702 100644
--- a/test/core/end2end/fixtures/h2_sockpair+trace.c
+++ b/test/core/end2end/fixtures/h2_sockpair+trace.c
@@ -154,9 +154,9 @@ int main(int argc, char **argv) {
      code paths in trace.c to be taken */
   gpr_setenv("GRPC_TRACE", "doesnt-exist,http,all");
 #ifdef GRPC_POSIX_SOCKET
-  g_fixture_slowdown_factor = isatty(STDOUT_FILENO) ? 10.0 : 1.0;
+  g_fixture_slowdown_factor = isatty(STDOUT_FILENO) ? 10 : 1;
 #else
-  g_fixture_slowdown_factor = 10.0;
+  g_fixture_slowdown_factor = 10;
 #endif
 
   grpc_test_init(argc, argv);
diff --git a/test/core/end2end/fixtures/h2_sockpair_1byte.c b/test/core/end2end/fixtures/h2_sockpair_1byte.c
index 11af7bee1e5..6f9cf8fe26a 100644
--- a/test/core/end2end/fixtures/h2_sockpair_1byte.c
+++ b/test/core/end2end/fixtures/h2_sockpair_1byte.c
@@ -144,7 +144,7 @@ static grpc_end2end_test_config configs[] = {
 int main(int argc, char **argv) {
   size_t i;
 
-  g_fixture_slowdown_factor = 2.0;
+  g_fixture_slowdown_factor = 2;
 
   grpc_test_init(argc, argv);
   grpc_end2end_tests_pre_init();
diff --git a/test/core/end2end/fixtures/h2_ssl_cert.c b/test/core/end2end/fixtures/h2_ssl_cert.c
index 844e93396df..f62331eea3d 100644
--- a/test/core/end2end/fixtures/h2_ssl_cert.c
+++ b/test/core/end2end/fixtures/h2_ssl_cert.c
@@ -275,7 +275,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -291,7 +291,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/goaway_server_test.c b/test/core/end2end/goaway_server_test.c
index 65fcb957816..c67c1f145ae 100644
--- a/test/core/end2end/goaway_server_test.c
+++ b/test/core/end2end/goaway_server_test.c
@@ -139,7 +139,7 @@ int main(int argc, char **argv) {
   grpc_call *call1 =
       grpc_channel_create_call(chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
                                grpc_slice_from_static_string("/foo"), &host,
-                               GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20), NULL);
+                               grpc_timeout_seconds_to_deadline(20), NULL);
   /* send initial metadata to probe connectivity */
   memset(ops, 0, sizeof(ops));
   op = ops;
@@ -215,7 +215,7 @@ int main(int argc, char **argv) {
   grpc_call *call2 =
       grpc_channel_create_call(chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
                                grpc_slice_from_static_string("/foo"), &host,
-                               GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20), NULL);
+                               grpc_timeout_seconds_to_deadline(20), NULL);
   /* send initial metadata to probe connectivity */
   memset(ops, 0, sizeof(ops));
   op = ops;
diff --git a/test/core/end2end/invalid_call_argument_test.c b/test/core/end2end/invalid_call_argument_test.c
index eb6d23c350f..2a9072570d3 100644
--- a/test/core/end2end/invalid_call_argument_test.c
+++ b/test/core/end2end/invalid_call_argument_test.c
@@ -72,7 +72,7 @@ static void prepare_test(int is_client) {
   g_state.is_client = is_client;
   grpc_metadata_array_init(&g_state.initial_metadata_recv);
   grpc_metadata_array_init(&g_state.trailing_metadata_recv);
-  g_state.deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2);
+  g_state.deadline = grpc_timeout_seconds_to_deadline(2);
   g_state.cq = grpc_completion_queue_create(NULL);
   g_state.cqv = cq_verifier_create(g_state.cq);
   g_state.details = grpc_empty_slice();
@@ -134,7 +134,7 @@ static void cleanup_test() {
     grpc_call_destroy(g_state.server_call);
     grpc_server_shutdown_and_notify(g_state.server, g_state.cq, tag(1000));
     GPR_ASSERT(grpc_completion_queue_pluck(g_state.cq, tag(1000),
-                                           GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                                           grpc_timeout_seconds_to_deadline(5),
                                            NULL)
                    .type == GRPC_OP_COMPLETE);
     grpc_server_destroy(g_state.server);
diff --git a/test/core/end2end/no_server_test.c b/test/core/end2end/no_server_test.c
index 5c0f7a0f488..26d26d8f7a7 100644
--- a/test/core/end2end/no_server_test.c
+++ b/test/core/end2end/no_server_test.c
@@ -45,7 +45,7 @@ static void *tag(intptr_t i) { return (void *)i; }
 int main(int argc, char **argv) {
   grpc_channel *chan;
   grpc_call *call;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(2);
   grpc_completion_queue *cq;
   cq_verifier *cqv;
   grpc_op ops[6];
diff --git a/test/core/end2end/tests/authority_not_supported.c b/test/core/end2end/tests/authority_not_supported.c
index 4ff8acb6e7f..7db2fd6b278 100644
--- a/test/core/end2end/tests/authority_not_supported.c
+++ b/test/core/end2end/tests/authority_not_supported.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/bad_hostname.c b/test/core/end2end/tests/bad_hostname.c
index 6eada3b4075..f50a5805a23 100644
--- a/test/core/end2end/tests/bad_hostname.c
+++ b/test/core/end2end/tests/bad_hostname.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/binary_metadata.c b/test/core/end2end/tests/binary_metadata.c
index 9df98ea3de7..7fb60f4495b 100644
--- a/test/core/end2end/tests/binary_metadata.c
+++ b/test/core/end2end/tests/binary_metadata.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/call_creds.c b/test/core/end2end/tests/call_creds.c
index 81309bb88c9..38cba50e129 100644
--- a/test/core/end2end/tests/call_creds.c
+++ b/test/core/end2end/tests/call_creds.c
@@ -76,7 +76,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -92,7 +92,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/cancel_after_accept.c b/test/core/end2end/tests/cancel_after_accept.c
index a8127c01e8f..1a92aa48378 100644
--- a/test/core/end2end/tests/cancel_after_accept.c
+++ b/test/core/end2end/tests/cancel_after_accept.c
@@ -65,7 +65,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -81,7 +81,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/cancel_after_client_done.c b/test/core/end2end/tests/cancel_after_client_done.c
index d3beb046c7e..0afeecb037b 100644
--- a/test/core/end2end/tests/cancel_after_client_done.c
+++ b/test/core/end2end/tests/cancel_after_client_done.c
@@ -59,7 +59,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -75,7 +75,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/cancel_after_invoke.c b/test/core/end2end/tests/cancel_after_invoke.c
index 2f091cb2e1e..8a96ef2f894 100644
--- a/test/core/end2end/tests/cancel_after_invoke.c
+++ b/test/core/end2end/tests/cancel_after_invoke.c
@@ -61,7 +61,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -77,7 +77,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/cancel_before_invoke.c b/test/core/end2end/tests/cancel_before_invoke.c
index e61a8383532..586aa7ead37 100644
--- a/test/core/end2end/tests/cancel_before_invoke.c
+++ b/test/core/end2end/tests/cancel_before_invoke.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/cancel_in_a_vacuum.c b/test/core/end2end/tests/cancel_in_a_vacuum.c
index 98d02a56f72..bc462ddcf56 100644
--- a/test/core/end2end/tests/cancel_in_a_vacuum.c
+++ b/test/core/end2end/tests/cancel_in_a_vacuum.c
@@ -59,7 +59,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -75,7 +75,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/cancel_with_status.c b/test/core/end2end/tests/cancel_with_status.c
index a5388444bc0..7d03fe5580f 100644
--- a/test/core/end2end/tests/cancel_with_status.c
+++ b/test/core/end2end/tests/cancel_with_status.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/compressed_payload.c b/test/core/end2end/tests/compressed_payload.c
index 62cdb419419..7dd8c112d11 100644
--- a/test/core/end2end/tests/compressed_payload.c
+++ b/test/core/end2end/tests/compressed_payload.c
@@ -66,7 +66,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -82,7 +82,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/connectivity.c b/test/core/end2end/tests/connectivity.c
index 42475c7331d..979419a100a 100644
--- a/test/core/end2end/tests/connectivity.c
+++ b/test/core/end2end/tests/connectivity.c
@@ -89,7 +89,7 @@ static void test_connectivity(grpc_end2end_test_config config) {
   /* channels should start life in IDLE, and stay there */
   GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) ==
              GRPC_CHANNEL_IDLE);
-  gpr_sleep_until(GRPC_TIMEOUT_MILLIS_TO_DEADLINE(100));
+  gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(100));
   GPR_ASSERT(grpc_channel_check_connectivity_state(f.client, 0) ==
              GRPC_CHANNEL_IDLE);
 
@@ -106,7 +106,7 @@ static void test_connectivity(grpc_end2end_test_config config) {
              GRPC_CHANNEL_IDLE);
   /* start watching for a change */
   grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_IDLE,
-                                        GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
+                                        grpc_timeout_seconds_to_deadline(3),
                                         f.cq, tag(2));
 
   /* and now the watch should trigger */
@@ -118,7 +118,7 @@ static void test_connectivity(grpc_end2end_test_config config) {
 
   /* quickly followed by a transition to TRANSIENT_FAILURE */
   grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_CONNECTING,
-                                        GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
+                                        grpc_timeout_seconds_to_deadline(3),
                                         f.cq, tag(3));
   CQ_EXPECT_COMPLETION(cqv, tag(3), 1);
   cq_verify(cqv);
@@ -137,7 +137,7 @@ static void test_connectivity(grpc_end2end_test_config config) {
      READY is reached */
   while (state != GRPC_CHANNEL_READY) {
     grpc_channel_watch_connectivity_state(
-        f.client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f.cq, tag(4));
+        f.client, state, grpc_timeout_seconds_to_deadline(3), f.cq, tag(4));
     CQ_EXPECT_COMPLETION(cqv, tag(4), 1);
     cq_verify(cqv);
     state = grpc_channel_check_connectivity_state(f.client, 0);
@@ -151,7 +151,7 @@ static void test_connectivity(grpc_end2end_test_config config) {
   gpr_log(GPR_DEBUG, "*** SHUTTING DOWN SERVER ***");
 
   grpc_channel_watch_connectivity_state(f.client, GRPC_CHANNEL_READY,
-                                        GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
+                                        grpc_timeout_seconds_to_deadline(3),
                                         f.cq, tag(5));
 
   grpc_server_shutdown_and_notify(f.server, f.cq, tag(0xdead));
diff --git a/test/core/end2end/tests/default_host.c b/test/core/end2end/tests/default_host.c
index b84eaf21ee2..bc1829b24b7 100644
--- a/test/core/end2end/tests/default_host.c
+++ b/test/core/end2end/tests/default_host.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/disappearing_server.c b/test/core/end2end/tests/disappearing_server.c
index 6d61c66df51..05440a6f56c 100644
--- a/test/core/end2end/tests/disappearing_server.c
+++ b/test/core/end2end/tests/disappearing_server.c
@@ -46,7 +46,7 @@
 static void *tag(intptr_t t) { return (void *)t; }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
diff --git a/test/core/end2end/tests/empty_batch.c b/test/core/end2end/tests/empty_batch.c
index 1ac6ea84ec6..50bb6b849e1 100644
--- a/test/core/end2end/tests/empty_batch.c
+++ b/test/core/end2end/tests/empty_batch.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/filter_call_init_fails.c b/test/core/end2end/tests/filter_call_init_fails.c
index 02add7a79a8..7e189164b2a 100644
--- a/test/core/end2end/tests/filter_call_init_fails.c
+++ b/test/core/end2end/tests/filter_call_init_fails.c
@@ -66,7 +66,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -82,7 +82,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/filter_causes_close.c b/test/core/end2end/tests/filter_causes_close.c
index a91b3dc1ec4..308b4de71b8 100644
--- a/test/core/end2end/tests/filter_causes_close.c
+++ b/test/core/end2end/tests/filter_causes_close.c
@@ -63,7 +63,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -79,7 +79,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/filter_latency.c b/test/core/end2end/tests/filter_latency.c
index 5bc6313813d..13d2ae012cf 100644
--- a/test/core/end2end/tests/filter_latency.c
+++ b/test/core/end2end/tests/filter_latency.c
@@ -70,7 +70,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -86,7 +86,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/graceful_server_shutdown.c b/test/core/end2end/tests/graceful_server_shutdown.c
index c5e3667c7c3..a3ad260cc22 100644
--- a/test/core/end2end/tests/graceful_server_shutdown.c
+++ b/test/core/end2end/tests/graceful_server_shutdown.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
diff --git a/test/core/end2end/tests/high_initial_seqno.c b/test/core/end2end/tests/high_initial_seqno.c
index c9eae13e482..cca8532b0e0 100644
--- a/test/core/end2end/tests/high_initial_seqno.c
+++ b/test/core/end2end/tests/high_initial_seqno.c
@@ -62,7 +62,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -78,7 +78,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/hpack_size.c b/test/core/end2end/tests/hpack_size.c
index 1376ba08259..7601722deea 100644
--- a/test/core/end2end/tests/hpack_size.c
+++ b/test/core/end2end/tests/hpack_size.c
@@ -202,7 +202,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -218,7 +218,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/idempotent_request.c b/test/core/end2end/tests/idempotent_request.c
index 65accbb7891..cef2e100be9 100644
--- a/test/core/end2end/tests/idempotent_request.c
+++ b/test/core/end2end/tests/idempotent_request.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/invoke_large_request.c b/test/core/end2end/tests/invoke_large_request.c
index ed16904728b..d799bd8ccf9 100644
--- a/test/core/end2end/tests/invoke_large_request.c
+++ b/test/core/end2end/tests/invoke_large_request.c
@@ -59,7 +59,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static void drain_cq(grpc_completion_queue *cq) {
@@ -73,7 +73,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/large_metadata.c b/test/core/end2end/tests/large_metadata.c
index dac9c3b92a5..ac4c0e7f3b4 100644
--- a/test/core/end2end/tests/large_metadata.c
+++ b/test/core/end2end/tests/large_metadata.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/load_reporting_hook.c b/test/core/end2end/tests/load_reporting_hook.c
index 3db51141a6d..085a563fb8f 100644
--- a/test/core/end2end/tests/load_reporting_hook.c
+++ b/test/core/end2end/tests/load_reporting_hook.c
@@ -84,7 +84,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -100,7 +100,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/max_concurrent_streams.c b/test/core/end2end/tests/max_concurrent_streams.c
index 37d044cefc4..bd2d69513b0 100644
--- a/test/core/end2end/tests/max_concurrent_streams.c
+++ b/test/core/end2end/tests/max_concurrent_streams.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
@@ -343,7 +343,7 @@ static void test_max_concurrent_streams(grpc_end2end_test_config config) {
   got_server_start = 0;
   live_call = -1;
   while (!got_client_start || !got_server_start) {
-    ev = grpc_completion_queue_next(f.cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3),
+    ev = grpc_completion_queue_next(f.cq, grpc_timeout_seconds_to_deadline(3),
                                     NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.success);
diff --git a/test/core/end2end/tests/max_message_length.c b/test/core/end2end/tests/max_message_length.c
index 4c9c218b5ae..b15d30f58c4 100644
--- a/test/core/end2end/tests/max_message_length.c
+++ b/test/core/end2end/tests/max_message_length.c
@@ -67,7 +67,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -83,7 +83,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/negative_deadline.c b/test/core/end2end/tests/negative_deadline.c
index d6271d788c2..0b61efbac97 100644
--- a/test/core/end2end/tests/negative_deadline.c
+++ b/test/core/end2end/tests/negative_deadline.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/network_status_change.c b/test/core/end2end/tests/network_status_change.c
index fe3afb7249d..9cef02b2b3b 100644
--- a/test/core/end2end/tests/network_status_change.c
+++ b/test/core/end2end/tests/network_status_change.c
@@ -61,7 +61,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(500); }
@@ -77,7 +77,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/no_logging.c b/test/core/end2end/tests/no_logging.c
index 72a52353903..56e48a88a87 100644
--- a/test/core/end2end/tests/no_logging.c
+++ b/test/core/end2end/tests/no_logging.c
@@ -88,7 +88,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -104,7 +104,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/no_op.c b/test/core/end2end/tests/no_op.c
index 09294bf0e9e..62fc728c3eb 100644
--- a/test/core/end2end/tests/no_op.c
+++ b/test/core/end2end/tests/no_op.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/payload.c b/test/core/end2end/tests/payload.c
index e23013d1a79..b04ee5705c6 100644
--- a/test/core/end2end/tests/payload.c
+++ b/test/core/end2end/tests/payload.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/ping.c b/test/core/end2end/tests/ping.c
index 5e5169dedce..61f4337f2fd 100644
--- a/test/core/end2end/tests/ping.c
+++ b/test/core/end2end/tests/ping.c
@@ -61,7 +61,7 @@ static void test_ping(grpc_end2end_test_config config) {
      READY is reached */
   while (state != GRPC_CHANNEL_READY) {
     grpc_channel_watch_connectivity_state(
-        f.client, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), f.cq, tag(99));
+        f.client, state, grpc_timeout_seconds_to_deadline(3), f.cq, tag(99));
     CQ_EXPECT_COMPLETION(cqv, tag(99), 1);
     cq_verify(cqv);
     state = grpc_channel_check_connectivity_state(f.client, 0);
diff --git a/test/core/end2end/tests/ping_pong_streaming.c b/test/core/end2end/tests/ping_pong_streaming.c
index 1aa23ea6e02..848f76018d1 100644
--- a/test/core/end2end/tests/ping_pong_streaming.c
+++ b/test/core/end2end/tests/ping_pong_streaming.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/registered_call.c b/test/core/end2end/tests/registered_call.c
index 9844e3de760..9c8ce89c838 100644
--- a/test/core/end2end/tests/registered_call.c
+++ b/test/core/end2end/tests/registered_call.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/request_with_flags.c b/test/core/end2end/tests/request_with_flags.c
index 4a296a62d75..329359e08b8 100644
--- a/test/core/end2end/tests/request_with_flags.c
+++ b/test/core/end2end/tests/request_with_flags.c
@@ -59,7 +59,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -75,7 +75,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/request_with_payload.c b/test/core/end2end/tests/request_with_payload.c
index 15c790b1299..f71f92bbb84 100644
--- a/test/core/end2end/tests/request_with_payload.c
+++ b/test/core/end2end/tests/request_with_payload.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/resource_quota_server.c b/test/core/end2end/tests/resource_quota_server.c
index 1000b63add8..3fbe0aa0d02 100644
--- a/test/core/end2end/tests/resource_quota_server.c
+++ b/test/core/end2end/tests/resource_quota_server.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/server_finishes_request.c b/test/core/end2end/tests/server_finishes_request.c
index 57c46d36a41..b42d17002e8 100644
--- a/test/core/end2end/tests/server_finishes_request.c
+++ b/test/core/end2end/tests/server_finishes_request.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/shutdown_finishes_calls.c b/test/core/end2end/tests/shutdown_finishes_calls.c
index b8c8dc9f062..c019682ea66 100644
--- a/test/core/end2end/tests/shutdown_finishes_calls.c
+++ b/test/core/end2end/tests/shutdown_finishes_calls.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
diff --git a/test/core/end2end/tests/shutdown_finishes_tags.c b/test/core/end2end/tests/shutdown_finishes_tags.c
index 06f7e75630f..5540d2aab9c 100644
--- a/test/core/end2end/tests/shutdown_finishes_tags.c
+++ b/test/core/end2end/tests/shutdown_finishes_tags.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
diff --git a/test/core/end2end/tests/simple_cacheable_request.c b/test/core/end2end/tests/simple_cacheable_request.c
index 3fbc35d8806..4eef02e9eed 100644
--- a/test/core/end2end/tests/simple_cacheable_request.c
+++ b/test/core/end2end/tests/simple_cacheable_request.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/simple_delayed_request.c b/test/core/end2end/tests/simple_delayed_request.c
index 50ee7d35b00..ea6b3e9645c 100644
--- a/test/core/end2end/tests/simple_delayed_request.c
+++ b/test/core/end2end/tests/simple_delayed_request.c
@@ -46,7 +46,7 @@
 static void *tag(intptr_t t) { return (void *)t; }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -62,7 +62,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/simple_metadata.c b/test/core/end2end/tests/simple_metadata.c
index 7086d527ede..7ab5563cfa9 100644
--- a/test/core/end2end/tests/simple_metadata.c
+++ b/test/core/end2end/tests/simple_metadata.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/simple_request.c b/test/core/end2end/tests/simple_request.c
index 7580ad1f7fe..af5d74959e3 100644
--- a/test/core/end2end/tests/simple_request.c
+++ b/test/core/end2end/tests/simple_request.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/streaming_error_response.c b/test/core/end2end/tests/streaming_error_response.c
index d5fefd13aae..42055907c85 100644
--- a/test/core/end2end/tests/streaming_error_response.c
+++ b/test/core/end2end/tests/streaming_error_response.c
@@ -60,7 +60,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -76,7 +76,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/trailing_metadata.c b/test/core/end2end/tests/trailing_metadata.c
index ca5cf2cd5ca..dbbda505bc4 100644
--- a/test/core/end2end/tests/trailing_metadata.c
+++ b/test/core/end2end/tests/trailing_metadata.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/write_buffering.c b/test/core/end2end/tests/write_buffering.c
index 50c0ed7ab40..abf90ca6e06 100644
--- a/test/core/end2end/tests/write_buffering.c
+++ b/test/core/end2end/tests/write_buffering.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/end2end/tests/write_buffering_at_end.c b/test/core/end2end/tests/write_buffering_at_end.c
index 5f68ed00a14..8c02b425bae 100644
--- a/test/core/end2end/tests/write_buffering_at_end.c
+++ b/test/core/end2end/tests/write_buffering_at_end.c
@@ -58,7 +58,7 @@ static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
 }
 
 static gpr_timespec n_seconds_time(int n) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(n);
+  return grpc_timeout_seconds_to_deadline(n);
 }
 
 static gpr_timespec five_seconds_time(void) { return n_seconds_time(5); }
@@ -74,7 +74,7 @@ static void shutdown_server(grpc_end2end_test_fixture *f) {
   if (!f->server) return;
   grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 f->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 f->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(f->server);
   f->server = NULL;
diff --git a/test/core/fling/client.c b/test/core/fling/client.c
index c4de949b3a7..85bab6d431b 100644
--- a/test/core/fling/client.c
+++ b/test/core/fling/client.c
@@ -214,9 +214,9 @@ int main(int argc, char **argv) {
 
   sc.init();
 
-  gpr_timespec end_warmup = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(warmup_seconds);
+  gpr_timespec end_warmup = grpc_timeout_seconds_to_deadline(warmup_seconds);
   gpr_timespec end_profiling =
-      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(warmup_seconds + benchmark_seconds);
+      grpc_timeout_seconds_to_deadline(warmup_seconds + benchmark_seconds);
 
   while (gpr_time_cmp(gpr_now(end_warmup.clock_type), end_warmup) < 0) {
     sc.do_one_step();
diff --git a/test/core/fling/server.c b/test/core/fling/server.c
index 11742cedb61..7ea54b1167e 100644
--- a/test/core/fling/server.c
+++ b/test/core/fling/server.c
@@ -244,7 +244,7 @@ int main(int argc, char **argv) {
       gpr_log(GPR_INFO, "Shutting down due to SIGINT");
       grpc_server_shutdown_and_notify(server, cq, tag(1000));
       GPR_ASSERT(grpc_completion_queue_pluck(
-                     cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                     cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                      .type == GRPC_OP_COMPLETE);
       grpc_completion_queue_shutdown(cq);
       shutdown_started = 1;
diff --git a/test/core/handshake/client_ssl.c b/test/core/handshake/client_ssl.c
index 613251b8355..a22133e629f 100644
--- a/test/core/handshake/client_ssl.c
+++ b/test/core/handshake/client_ssl.c
@@ -274,8 +274,8 @@ static bool client_ssl_test(char *server_alpn_preferred) {
   grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
   while (state != GRPC_CHANNEL_READY && retries-- > 0) {
     grpc_channel_watch_connectivity_state(
-        channel, state, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), cq, NULL);
-    gpr_timespec cq_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5);
+        channel, state, grpc_timeout_seconds_to_deadline(3), cq, NULL);
+    gpr_timespec cq_deadline = grpc_timeout_seconds_to_deadline(5);
     grpc_event ev = grpc_completion_queue_next(cq, cq_deadline, NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     state =
diff --git a/test/core/handshake/server_ssl.c b/test/core/handshake/server_ssl.c
index f39b0040a6c..0bd5a03cffe 100644
--- a/test/core/handshake/server_ssl.c
+++ b/test/core/handshake/server_ssl.c
@@ -113,7 +113,7 @@ static void server_thread(void *arg) {
   // sleeping between polls.
   int retries = 10;
   while (!gpr_event_get(&client_handshake_complete) && retries-- > 0) {
-    const gpr_timespec cq_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1);
+    const gpr_timespec cq_deadline = grpc_timeout_seconds_to_deadline(1);
     grpc_event ev = grpc_completion_queue_next(cq, cq_deadline, NULL);
     GPR_ASSERT(ev.type == GRPC_QUEUE_TIMEOUT);
   }
@@ -122,7 +122,7 @@ static void server_thread(void *arg) {
   grpc_server_shutdown_and_notify(server, cq, NULL);
   grpc_completion_queue_shutdown(cq);
 
-  const gpr_timespec cq_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5);
+  const gpr_timespec cq_deadline = grpc_timeout_seconds_to_deadline(5);
   grpc_event ev = grpc_completion_queue_next(cq, cq_deadline, NULL);
   GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
 
diff --git a/test/core/http/httpcli_test.c b/test/core/http/httpcli_test.c
index 4cdbb5d6da6..6cc00f871d8 100644
--- a/test/core/http/httpcli_test.c
+++ b/test/core/http/httpcli_test.c
@@ -51,7 +51,7 @@ static gpr_mu *g_mu;
 static grpc_polling_entity g_pops;
 
 static gpr_timespec n_seconds_time(int seconds) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(seconds);
+  return grpc_timeout_seconds_to_deadline(seconds);
 }
 
 static void on_finish(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
diff --git a/test/core/http/httpscli_test.c b/test/core/http/httpscli_test.c
index 72017cfa54e..e1a26d91e9e 100644
--- a/test/core/http/httpscli_test.c
+++ b/test/core/http/httpscli_test.c
@@ -51,7 +51,7 @@ static gpr_mu *g_mu;
 static grpc_polling_entity g_pops;
 
 static gpr_timespec n_seconds_time(int seconds) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(seconds);
+  return grpc_timeout_seconds_to_deadline(seconds);
 }
 
 static void on_finish(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {
diff --git a/test/core/iomgr/combiner_test.c b/test/core/iomgr/combiner_test.c
index 9b6d6ff9b46..4c9275a6732 100644
--- a/test/core/iomgr/combiner_test.c
+++ b/test/core/iomgr/combiner_test.c
@@ -103,7 +103,7 @@ static void execute_many_loop(void *a) {
     }
     // sleep for a little bit, to test a combiner draining and another thread
     // picking it up
-    gpr_sleep_until(GRPC_TIMEOUT_MILLIS_TO_DEADLINE(100));
+    gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(100));
   }
   grpc_exec_ctx_finish(&exec_ctx);
 }
diff --git a/test/core/iomgr/endpoint_tests.c b/test/core/iomgr/endpoint_tests.c
index bbc5f383f63..94067a8ca4d 100644
--- a/test/core/iomgr/endpoint_tests.c
+++ b/test/core/iomgr/endpoint_tests.c
@@ -187,7 +187,7 @@ static void read_and_write_test(grpc_endpoint_test_config config,
                                 size_t num_bytes, size_t write_size,
                                 size_t slice_size, bool shutdown) {
   struct read_and_write_test_state state;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(20);
   grpc_endpoint_test_fixture f =
       begin_test(config, "read_and_write_test", slice_size);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
diff --git a/test/core/iomgr/resolve_address_posix_test.c b/test/core/iomgr/resolve_address_posix_test.c
index e256609571a..a4feff8b009 100644
--- a/test/core/iomgr/resolve_address_posix_test.c
+++ b/test/core/iomgr/resolve_address_posix_test.c
@@ -47,7 +47,7 @@
 #include "test/core/util/test_config.h"
 
 static gpr_timespec test_deadline(void) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(100);
+  return grpc_timeout_seconds_to_deadline(100);
 }
 
 typedef struct args_struct {
diff --git a/test/core/iomgr/resolve_address_test.c b/test/core/iomgr/resolve_address_test.c
index 84f4ed4c90e..54de9a20e1c 100644
--- a/test/core/iomgr/resolve_address_test.c
+++ b/test/core/iomgr/resolve_address_test.c
@@ -42,7 +42,7 @@
 #include "test/core/util/test_config.h"
 
 static gpr_timespec test_deadline(void) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(100);
+  return grpc_timeout_seconds_to_deadline(100);
 }
 
 typedef struct args_struct {
diff --git a/test/core/iomgr/tcp_client_posix_test.c b/test/core/iomgr/tcp_client_posix_test.c
index 6bb00bc7872..dcdff8efb13 100644
--- a/test/core/iomgr/tcp_client_posix_test.c
+++ b/test/core/iomgr/tcp_client_posix_test.c
@@ -57,7 +57,7 @@ static int g_connections_complete = 0;
 static grpc_endpoint *g_connecting = NULL;
 
 static gpr_timespec test_deadline(void) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
+  return grpc_timeout_seconds_to_deadline(10);
 }
 
 static void finish_connection() {
@@ -135,7 +135,7 @@ void test_succeeds(void) {
         "pollset_work",
         grpc_pollset_work(&exec_ctx, g_pollset, &worker,
                           gpr_now(GPR_CLOCK_MONOTONIC),
-                          GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))));
+                          grpc_timeout_seconds_to_deadline(5))));
     gpr_mu_unlock(g_mu);
     grpc_exec_ctx_flush(&exec_ctx);
     gpr_mu_lock(g_mu);
diff --git a/test/core/iomgr/tcp_posix_test.c b/test/core/iomgr/tcp_posix_test.c
index cabb64eb8f1..99ecd581c6d 100644
--- a/test/core/iomgr/tcp_posix_test.c
+++ b/test/core/iomgr/tcp_posix_test.c
@@ -175,7 +175,7 @@ static void read_test(size_t num_bytes, size_t slice_size) {
   grpc_endpoint *ep;
   struct read_socket_state state;
   size_t written_bytes;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(20);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   gpr_log(GPR_INFO, "Read test of size %" PRIuPTR ", slice size %" PRIuPTR,
@@ -226,7 +226,7 @@ static void large_read_test(size_t slice_size) {
   grpc_endpoint *ep;
   struct read_socket_state state;
   ssize_t written_bytes;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(20);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   gpr_log(GPR_INFO, "Start large read test, slice size %" PRIuPTR, slice_size);
@@ -330,7 +330,7 @@ void drain_socket_blocking(int fd, size_t num_bytes, size_t read_size) {
         "pollset_work",
         grpc_pollset_work(&exec_ctx, g_pollset, &worker,
                           gpr_now(GPR_CLOCK_MONOTONIC),
-                          GRPC_TIMEOUT_MILLIS_TO_DEADLINE(10))));
+                          grpc_timeout_milliseconds_to_deadline(10))));
     gpr_mu_unlock(g_mu);
     grpc_exec_ctx_finish(&exec_ctx);
     do {
@@ -363,7 +363,7 @@ static void write_test(size_t num_bytes, size_t slice_size) {
   uint8_t current_data = 0;
   grpc_slice_buffer outgoing;
   grpc_closure write_done_closure;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(20);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
 
   gpr_log(GPR_INFO,
@@ -428,7 +428,7 @@ static void release_fd_test(size_t num_bytes, size_t slice_size) {
   struct read_socket_state state;
   size_t written_bytes;
   int fd;
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(20);
   grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
   grpc_closure fd_released_cb;
   int fd_released_done = 0;
diff --git a/test/core/iomgr/tcp_server_posix_test.c b/test/core/iomgr/tcp_server_posix_test.c
index 417bc5111a0..7122cd1e869 100644
--- a/test/core/iomgr/tcp_server_posix_test.c
+++ b/test/core/iomgr/tcp_server_posix_test.c
@@ -202,7 +202,7 @@ static void test_no_op_with_port_and_start(void) {
 
 static void tcp_connect(grpc_exec_ctx *exec_ctx, const struct sockaddr *remote,
                         socklen_t remote_len, on_connect_result *result) {
-  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
+  gpr_timespec deadline = grpc_timeout_seconds_to_deadline(10);
   int clifd = socket(remote->sa_family, SOCK_STREAM, 0);
   int nconnects_before;
 
diff --git a/test/core/iomgr/udp_server_test.c b/test/core/iomgr/udp_server_test.c
index e1210401c81..9ec6d7bf207 100644
--- a/test/core/iomgr/udp_server_test.c
+++ b/test/core/iomgr/udp_server_test.c
@@ -179,7 +179,7 @@ static void test_receive(int number_of_clients) {
   gpr_mu_lock(g_mu);
 
   for (i = 0; i < number_of_clients; i++) {
-    deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
+    deadline = grpc_timeout_seconds_to_deadline(10);
 
     number_of_reads_before = g_number_of_reads;
     /* Create a socket, send a packet to the UDP server. */
diff --git a/test/core/memory_usage/server.c b/test/core/memory_usage/server.c
index 1cae4f40640..ab059c25b8b 100644
--- a/test/core/memory_usage/server.c
+++ b/test/core/memory_usage/server.c
@@ -232,7 +232,7 @@ int main(int argc, char **argv) {
       gpr_log(GPR_INFO, "Shutting down due to SIGINT");
       grpc_server_shutdown_and_notify(server, cq, tag(1000));
       GPR_ASSERT(grpc_completion_queue_pluck(
-                     cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                     cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                      .type == GRPC_OP_COMPLETE);
       grpc_completion_queue_shutdown(cq);
       shutdown_started = 1;
diff --git a/test/core/statistics/census_log_tests.c b/test/core/statistics/census_log_tests.c
index 8646a2fdf1d..0f96f014eae 100644
--- a/test/core/statistics/census_log_tests.c
+++ b/test/core/statistics/census_log_tests.c
@@ -199,7 +199,7 @@ static void writer_thread(void *arg) {
          This should never happen for circular logs. */
       printf("   Writer stalled due to out-of-space: %d out of %d written\n",
              records_written, args->num_records);
-      gpr_sleep_until(GRPC_TIMEOUT_MILLIS_TO_DEADLINE(10));
+      gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(10));
     }
   }
   /* Done. Decrement count and signal. */
diff --git a/test/core/support/cpu_test.c b/test/core/support/cpu_test.c
index a5c52442ad4..ca0fe0ccb50 100644
--- a/test/core/support/cpu_test.c
+++ b/test/core/support/cpu_test.c
@@ -81,9 +81,9 @@ static void worker_thread(void *arg) {
   uint32_t cpu;
   unsigned r = 12345678;
   unsigned i, j;
-  for (i = 0; i < 1000 / GRPC_TEST_SLOWDOWN_FACTOR; i++) {
+  for (i = 0; i < 1000 / grpc_test_slowdown_factor(); i++) {
     /* run for a bit - just calculate something random. */
-    for (j = 0; j < 1000000 / GRPC_TEST_SLOWDOWN_FACTOR; j++) {
+    for (j = 0; j < 1000000 / grpc_test_slowdown_factor(); j++) {
       r = (r * 17) & ((r - i) | (r * i));
     }
     cpu = gpr_cpu_current_cpu();
diff --git a/test/core/surface/alarm_test.c b/test/core/surface/alarm_test.c
index 054c3283897..4afe357c277 100644
--- a/test/core/surface/alarm_test.c
+++ b/test/core/surface/alarm_test.c
@@ -64,9 +64,9 @@ static void test_alarm(void) {
     grpc_event ev;
     void *tag = create_test_tag();
     grpc_alarm *alarm =
-        grpc_alarm_create(cc, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), tag);
+        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(1), tag);
 
-    ev = grpc_completion_queue_next(cc, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2),
+    ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(2),
                                     NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.tag == tag);
@@ -78,10 +78,10 @@ static void test_alarm(void) {
     grpc_event ev;
     void *tag = create_test_tag();
     grpc_alarm *alarm =
-        grpc_alarm_create(cc, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2), tag);
+        grpc_alarm_create(cc, grpc_timeout_seconds_to_deadline(2), tag);
 
     grpc_alarm_cancel(alarm);
-    ev = grpc_completion_queue_next(cc, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1),
+    ev = grpc_completion_queue_next(cc, grpc_timeout_seconds_to_deadline(1),
                                     NULL);
     GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
     GPR_ASSERT(ev.tag == tag);
diff --git a/test/core/surface/completion_queue_test.c b/test/core/surface/completion_queue_test.c
index 1486d2508f6..b8ea90921a8 100644
--- a/test/core/surface/completion_queue_test.c
+++ b/test/core/surface/completion_queue_test.c
@@ -232,7 +232,7 @@ static void test_too_many_plucks(void) {
   }
 
   /* wait until all other threads are plucking */
-  gpr_sleep_until(GRPC_TIMEOUT_MILLIS_TO_DEADLINE(1000));
+  gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(1000));
 
   ev = grpc_completion_queue_pluck(cc, create_test_tag(),
                                    gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
@@ -266,7 +266,7 @@ typedef struct test_thread_options {
 } test_thread_options;
 
 gpr_timespec ten_seconds_time(void) {
-  return GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10);
+  return grpc_timeout_seconds_to_deadline(10);
 }
 
 static void free_completion(grpc_exec_ctx *exec_ctx, void *arg,
diff --git a/test/core/surface/concurrent_connectivity_test.c b/test/core/surface/concurrent_connectivity_test.c
index 7071f93d8db..4f7a25ab934 100644
--- a/test/core/surface/concurrent_connectivity_test.c
+++ b/test/core/surface/concurrent_connectivity_test.c
@@ -70,11 +70,13 @@ void create_loop_destroy(void *addr) {
     grpc_channel *chan = grpc_insecure_channel_create((char *)addr, NULL, NULL);
 
     for (int j = 0; j < NUM_INNER_LOOPS; ++j) {
-      gpr_timespec later_time = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(DELAY_MILLIS);
+      gpr_timespec later_time =
+          grpc_timeout_milliseconds_to_deadline(DELAY_MILLIS);
       grpc_connectivity_state state =
           grpc_channel_check_connectivity_state(chan, 1);
       grpc_channel_watch_connectivity_state(chan, state, later_time, cq, NULL);
-      gpr_timespec poll_time = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(POLL_MILLIS);
+      gpr_timespec poll_time =
+          grpc_timeout_milliseconds_to_deadline(POLL_MILLIS);
       GPR_ASSERT(grpc_completion_queue_next(cq, poll_time, NULL).type ==
                  GRPC_OP_COMPLETE);
     }
diff --git a/test/core/surface/lame_client_test.c b/test/core/surface/lame_client_test.c
index b5b42c16ffa..9deb50bb044 100644
--- a/test/core/surface/lame_client_test.c
+++ b/test/core/surface/lame_client_test.c
@@ -113,7 +113,7 @@ int main(int argc, char **argv) {
   grpc_slice host = grpc_slice_from_static_string("anywhere");
   call = grpc_channel_create_call(chan, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
                                   grpc_slice_from_static_string("/Foo"), &host,
-                                  GRPC_TIMEOUT_SECONDS_TO_DEADLINE(100), NULL);
+                                  grpc_timeout_seconds_to_deadline(100), NULL);
   GPR_ASSERT(call);
   cqv = cq_verifier_create(cq);
 
diff --git a/test/core/surface/sequential_connectivity_test.c b/test/core/surface/sequential_connectivity_test.c
index 32927187626..5f66f900372 100644
--- a/test/core/surface/sequential_connectivity_test.c
+++ b/test/core/surface/sequential_connectivity_test.c
@@ -91,7 +91,7 @@ static void run_test(const test_fixture *fixture) {
   for (size_t i = 0; i < NUM_CONNECTIONS; i++) {
     channels[i] = fixture->create_channel(addr);
 
-    gpr_timespec connect_deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(30);
+    gpr_timespec connect_deadline = grpc_timeout_seconds_to_deadline(30);
     grpc_connectivity_state state;
     while ((state = grpc_channel_check_connectivity_state(channels[i], 1)) !=
            GRPC_CHANNEL_READY) {
diff --git a/test/core/util/port_server_client.c b/test/core/util/port_server_client.c
index 118708d419c..6d722ffc882 100644
--- a/test/core/util/port_server_client.c
+++ b/test/core/util/port_server_client.c
@@ -103,7 +103,7 @@ void grpc_free_port_using_server(char *server, int port) {
   grpc_resource_quota *resource_quota =
       grpc_resource_quota_create("port_server_client/free");
   grpc_httpcli_get(&exec_ctx, &context, &pr.pops, resource_quota, &req,
-                   GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
+                   grpc_timeout_seconds_to_deadline(10),
                    grpc_closure_create(freed_port_from_server, &pr,
                                        grpc_schedule_on_exec_ctx),
                    &rsp);
@@ -115,7 +115,7 @@ void grpc_free_port_using_server(char *server, int port) {
             "pollset_work",
             grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&pr.pops),
                               &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                              GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1)))) {
+                              grpc_timeout_seconds_to_deadline(1)))) {
       pr.done = 1;
     }
   }
@@ -176,7 +176,7 @@ static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
     grpc_resource_quota *resource_quota =
         grpc_resource_quota_create("port_server_client/pick_retry");
     grpc_httpcli_get(exec_ctx, pr->ctx, &pr->pops, resource_quota, &req,
-                     GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
+                     grpc_timeout_seconds_to_deadline(10),
                      grpc_closure_create(got_port_from_server, pr,
                                          grpc_schedule_on_exec_ctx),
                      &pr->response);
@@ -226,7 +226,7 @@ int grpc_pick_port_using_server(char *server) {
       grpc_resource_quota_create("port_server_client/pick");
   grpc_httpcli_get(
       &exec_ctx, &context, &pr.pops, resource_quota, &req,
-      GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10),
+      grpc_timeout_seconds_to_deadline(10),
       grpc_closure_create(got_port_from_server, &pr, grpc_schedule_on_exec_ctx),
       &pr.response);
   grpc_resource_quota_unref_internal(&exec_ctx, resource_quota);
@@ -238,7 +238,7 @@ int grpc_pick_port_using_server(char *server) {
             "pollset_work",
             grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&pr.pops),
                               &worker, gpr_now(GPR_CLOCK_MONOTONIC),
-                              GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1)))) {
+                              grpc_timeout_seconds_to_deadline(1)))) {
       pr.port = 0;
     }
   }
diff --git a/test/core/util/test_config.c b/test/core/util/test_config.c
index d86ed94637c..94aab272531 100644
--- a/test/core/util/test_config.c
+++ b/test/core/util/test_config.c
@@ -45,8 +45,8 @@
 #include "src/core/lib/support/env.h"
 #include "src/core/lib/support/string.h"
 
-double g_fixture_slowdown_factor = 1.0;
-double g_poller_slowdown_factor = 1.0;
+int64_t g_fixture_slowdown_factor = 1;
+int64_t g_poller_slowdown_factor = 1;
 
 #if GPR_GETPID_IN_UNISTD_H
 #include <unistd.h>
@@ -278,19 +278,109 @@ static void install_crash_handler() {
 static void install_crash_handler() {}
 #endif
 
+bool BuiltUnderValgrind() {
+#ifdef RUNNING_ON_VALGRIND
+  return true;
+#else
+  return false;
+#endif
+}
+
+bool BuiltUnderTsan() {
+#if defined(__has_feature)
+#if __has_feature(thread_sanitizer)
+  return true;
+#else
+  return false;
+#endif
+#else
+#ifdef THREAD_SANITIZER
+  return true;
+#else
+  return false;
+#endif
+#endif
+}
+
+bool BuiltUnderAsan() {
+#if defined(__has_feature)
+#if __has_feature(address_sanitizer)
+  return true;
+#else
+  return false;
+#endif
+#else
+#ifdef ADDRESS_SANITIZER
+  return true;
+#else
+  return false;
+#endif
+#endif
+}
+
+bool BuiltUnderMsan() {
+#if defined(__has_feature)
+#if __has_feature(memory_sanitizer)
+  return true;
+#else
+  return false;
+#endif
+#else
+#ifdef MEMORY_SANITIZER
+  return true;
+#else
+  return false;
+#endif
+#endif
+}
+
+int64_t grpc_test_sanitizer_slowdown_factor() {
+  int64_t sanitizer_multiplier = 1;
+  if (BuiltUnderValgrind()) {
+    sanitizer_multiplier = 20;
+  } else if (BuiltUnderTsan()) {
+    sanitizer_multiplier = 5;
+  } else if (BuiltUnderAsan()) {
+    sanitizer_multiplier = 3;
+  } else if (BuiltUnderMsan()) {
+    sanitizer_multiplier = 4;
+  }
+  return sanitizer_multiplier;
+}
+
+int64_t grpc_test_slowdown_factor() {
+  return grpc_test_sanitizer_slowdown_factor() * g_fixture_slowdown_factor *
+         g_poller_slowdown_factor;
+}
+
+gpr_timespec grpc_timeout_seconds_to_deadline(int64_t time_s) {
+  return gpr_time_add(
+      gpr_now(GPR_CLOCK_MONOTONIC),
+      gpr_time_from_millis(grpc_test_slowdown_factor() * (int64_t)1e3 * time_s,
+                           GPR_TIMESPAN));
+}
+
+gpr_timespec grpc_timeout_milliseconds_to_deadline(int64_t time_ms) {
+  return gpr_time_add(
+      gpr_now(GPR_CLOCK_MONOTONIC),
+      gpr_time_from_micros(grpc_test_slowdown_factor() * (int64_t)1e3 * time_ms,
+                           GPR_TIMESPAN));
+}
+
 void grpc_test_init(int argc, char **argv) {
   install_crash_handler();
   { /* poll-cv poll strategy runs much more slowly than anything else */
     char *s = gpr_getenv("GRPC_POLL_STRATEGY");
     if (s != NULL && 0 == strcmp(s, "poll-cv")) {
-      g_poller_slowdown_factor = 5.0;
+      g_poller_slowdown_factor = 5;
     }
     gpr_free(s);
   }
-  gpr_log(GPR_DEBUG, "test slowdown: machine=%f build=%f poll=%f total=%f",
-          (double)GRPC_TEST_SLOWDOWN_MACHINE_FACTOR,
-          (double)GRPC_TEST_SLOWDOWN_BUILD_FACTOR, g_poller_slowdown_factor,
-          (double)GRPC_TEST_SLOWDOWN_FACTOR);
+  gpr_log(GPR_DEBUG,
+          "test slowdown factor: sanitizer=%" PRId64 ", fixture=%" PRId64
+          ", poller=%" PRId64 ", total=%" PRId64,
+          grpc_test_sanitizer_slowdown_factor(), g_fixture_slowdown_factor,
+          g_poller_slowdown_factor, grpc_test_slowdown_factor());
   /* seed rng with pid, so we don't end up with the same random numbers as a
      concurrently running test binary */
   srand(seed());
diff --git a/test/core/util/test_config.h b/test/core/util/test_config.h
index c13fe86a649..491f011fc8b 100644
--- a/test/core/util/test_config.h
+++ b/test/core/util/test_config.h
@@ -40,32 +40,17 @@
 extern "C" {
 #endif /*  __cplusplus */
 
-#ifndef GRPC_TEST_SLOWDOWN_BUILD_FACTOR
-#define GRPC_TEST_SLOWDOWN_BUILD_FACTOR 1.0
-#endif
-
-#ifndef GRPC_TEST_SLOWDOWN_MACHINE_FACTOR
-#define GRPC_TEST_SLOWDOWN_MACHINE_FACTOR 1.0
-#endif
-
-extern double g_fixture_slowdown_factor;
-extern double g_poller_slowdown_factor;
+extern int64_t g_fixture_slowdown_factor;
+extern int64_t g_poller_slowdown_factor;
 
-#define GRPC_TEST_SLOWDOWN_FACTOR                                        \
-  (GRPC_TEST_SLOWDOWN_BUILD_FACTOR * GRPC_TEST_SLOWDOWN_MACHINE_FACTOR * \
-   g_fixture_slowdown_factor * g_poller_slowdown_factor)
+/* Returns an appropriate scaling factor for timeouts. */
+int64_t grpc_test_slowdown_factor();
 
-#define GRPC_TIMEOUT_SECONDS_TO_DEADLINE(x)                                  \
-  gpr_time_add(                                                              \
-      gpr_now(GPR_CLOCK_MONOTONIC),                                          \
-      gpr_time_from_millis((int64_t)(GRPC_TEST_SLOWDOWN_FACTOR * 1e3 * (x)), \
-                           GPR_TIMESPAN))
+/* Converts a given timeout (in seconds) to a deadline. */
+gpr_timespec grpc_timeout_seconds_to_deadline(int64_t time_s);
 
-#define GRPC_TIMEOUT_MILLIS_TO_DEADLINE(x)                                   \
-  gpr_time_add(                                                              \
-      gpr_now(GPR_CLOCK_MONOTONIC),                                          \
-      gpr_time_from_micros((int64_t)(GRPC_TEST_SLOWDOWN_FACTOR * 1e3 * (x)), \
-                           GPR_TIMESPAN))
+/* Converts a given timeout (in milliseconds) to a deadline. */
+gpr_timespec grpc_timeout_milliseconds_to_deadline(int64_t time_ms);
 
 #ifndef GRPC_TEST_CUSTOM_PICK_PORT
 #define GRPC_TEST_PICK_PORT
diff --git a/test/cpp/common/alarm_cpp_test.cc b/test/cpp/common/alarm_cpp_test.cc
index a05ac30b1c7..41085174a47 100644
--- a/test/cpp/common/alarm_cpp_test.cc
+++ b/test/cpp/common/alarm_cpp_test.cc
@@ -43,12 +43,12 @@ namespace {
 TEST(AlarmTest, RegularExpiry) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1), junk);
+  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(1), junk);
 
   void* output_tag;
   bool ok;
   const CompletionQueue::NextStatus status = cq.AsyncNext(
-      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2));
+      (void**)&output_tag, &ok, grpc_timeout_seconds_to_deadline(2));
 
   EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
   EXPECT_TRUE(ok);
@@ -65,7 +65,7 @@ TEST(AlarmTest, RegularExpiryChrono) {
   void* output_tag;
   bool ok;
   const CompletionQueue::NextStatus status = cq.AsyncNext(
-      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2));
+      (void**)&output_tag, &ok, grpc_timeout_seconds_to_deadline(2));
 
   EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
   EXPECT_TRUE(ok);
@@ -75,12 +75,12 @@ TEST(AlarmTest, RegularExpiryChrono) {
 TEST(AlarmTest, ZeroExpiry) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(0), junk);
+  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(0), junk);
 
   void* output_tag;
   bool ok;
   const CompletionQueue::NextStatus status = cq.AsyncNext(
-      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(0));
+      (void**)&output_tag, &ok, grpc_timeout_seconds_to_deadline(0));
 
   EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
   EXPECT_TRUE(ok);
@@ -90,12 +90,12 @@ TEST(AlarmTest, ZeroExpiry) {
 TEST(AlarmTest, NegativeExpiry) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(-1), junk);
+  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(-1), junk);
 
   void* output_tag;
   bool ok;
   const CompletionQueue::NextStatus status = cq.AsyncNext(
-      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(0));
+      (void**)&output_tag, &ok, grpc_timeout_seconds_to_deadline(0));
 
   EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
   EXPECT_TRUE(ok);
@@ -105,13 +105,13 @@ TEST(AlarmTest, NegativeExpiry) {
 TEST(AlarmTest, Cancellation) {
   CompletionQueue cq;
   void* junk = reinterpret_cast<void*>(1618033);
-  Alarm alarm(&cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(2), junk);
+  Alarm alarm(&cq, grpc_timeout_seconds_to_deadline(2), junk);
   alarm.Cancel();
 
   void* output_tag;
   bool ok;
   const CompletionQueue::NextStatus status = cq.AsyncNext(
-      (void**)&output_tag, &ok, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1));
+      (void**)&output_tag, &ok, grpc_timeout_seconds_to_deadline(1));
 
   EXPECT_EQ(status, CompletionQueue::GOT_EVENT);
   EXPECT_FALSE(ok);
diff --git a/test/cpp/grpclb/grpclb_test.cc b/test/cpp/grpclb/grpclb_test.cc
index a10cda7ddb9..4b8a434c789 100644
--- a/test/cpp/grpclb/grpclb_test.cc
+++ b/test/cpp/grpclb/grpclb_test.cc
@@ -170,7 +170,7 @@ static grpc_slice build_response_payload_slice(
 static void drain_cq(grpc_completion_queue *cq) {
   grpc_event ev;
   do {
-    ev = grpc_completion_queue_next(cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+    ev = grpc_completion_queue_next(cq, grpc_timeout_seconds_to_deadline(5),
                                     NULL);
   } while (ev.type != GRPC_QUEUE_SHUTDOWN);
 }
@@ -336,7 +336,7 @@ static void start_backend_server(server_fixture *sf) {
     GPR_ASSERT(GRPC_CALL_OK == error);
     gpr_log(GPR_INFO, "Server[%s] up", sf->servers_hostport);
     ev = grpc_completion_queue_next(sf->cq,
-                                    GRPC_TIMEOUT_SECONDS_TO_DEADLINE(60), NULL);
+                                    grpc_timeout_seconds_to_deadline(60), NULL);
     if (!ev.success) {
       gpr_log(GPR_INFO, "Server[%s] being torn down", sf->servers_hostport);
       cq_verifier_destroy(cqv);
@@ -380,7 +380,7 @@ static void start_backend_server(server_fixture *sf) {
       error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), NULL);
       GPR_ASSERT(GRPC_CALL_OK == error);
       ev = grpc_completion_queue_next(
-          sf->cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), NULL);
+          sf->cq, grpc_timeout_seconds_to_deadline(3), NULL);
       if (ev.type == GRPC_OP_COMPLETE && ev.success) {
         GPR_ASSERT(ev.tag = tag(102));
         if (request_payload_recv == NULL) {
@@ -410,7 +410,7 @@ static void start_backend_server(server_fixture *sf) {
             grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), NULL);
         GPR_ASSERT(GRPC_CALL_OK == error);
         ev = grpc_completion_queue_next(
-            sf->cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3), NULL);
+            sf->cq, grpc_timeout_seconds_to_deadline(3), NULL);
         if (ev.type == GRPC_OP_COMPLETE && ev.success) {
           GPR_ASSERT(ev.tag = tag(103));
         } else {
@@ -477,7 +477,7 @@ static void perform_request(client_fixture *cf) {
   grpc_slice host = grpc_slice_from_static_string("foo.test.google.fr:1234");
   c = grpc_channel_create_call(cf->client, NULL, GRPC_PROPAGATE_DEFAULTS,
                                cf->cq, grpc_slice_from_static_string("/foo"),
-                               &host, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5),
+                               &host, grpc_timeout_seconds_to_deadline(5),
                                NULL);
   gpr_log(GPR_INFO, "Call 0x%" PRIxPTR " created", (intptr_t)c);
   GPR_ASSERT(c);
@@ -605,7 +605,7 @@ static void teardown_server(server_fixture *sf) {
   gpr_log(GPR_INFO, "Server[%s] shutting down", sf->servers_hostport);
   grpc_server_shutdown_and_notify(sf->server, sf->cq, tag(1000));
   GPR_ASSERT(grpc_completion_queue_pluck(
-                 sf->cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL)
+                 sf->cq, tag(1000), grpc_timeout_seconds_to_deadline(5), NULL)
                  .type == GRPC_OP_COMPLETE);
   grpc_server_destroy(sf->server);
   gpr_thd_join(sf->tid);
diff --git a/test/cpp/qps/qps_openloop_test.cc b/test/cpp/qps/qps_openloop_test.cc
index 8dc50ac6d88..70e2709ac02 100644
--- a/test/cpp/qps/qps_openloop_test.cc
+++ b/test/cpp/qps/qps_openloop_test.cc
@@ -56,7 +56,7 @@ static void RunQPS() {
   client_config.set_async_client_threads(8);
   client_config.set_rpc_type(STREAMING);
   client_config.mutable_load_params()->mutable_poisson()->set_offered_load(
-      1000.0 / GRPC_TEST_SLOWDOWN_FACTOR);
+      1000.0 / grpc_test_slowdown_factor());
 
   ServerConfig server_config;
   server_config.set_server_type(ASYNC_SERVER);
diff --git a/tools/run_tests/generated/configs.json b/tools/run_tests/generated/configs.json
index f2c110766b2..091f5d98239 100644
--- a/tools/run_tests/generated/configs.json
+++ b/tools/run_tests/generated/configs.json
@@ -7,7 +7,6 @@
   }, 
   {
     "config": "helgrind", 
-    "timeout_multiplier": 20, 
     "tool_prefix": [
       "valgrind", 
       "--tool=helgrind"
@@ -17,16 +16,14 @@
     "config": "asan-noleaks", 
     "environ": {
       "ASAN_OPTIONS": "detect_leaks=0:color=always"
-    }, 
-    "timeout_multiplier": 3
+    }
   }, 
   {
     "config": "asan-trace-cmp", 
     "environ": {
       "ASAN_OPTIONS": "detect_leaks=1:color=always", 
       "LSAN_OPTIONS": "suppressions=tools/lsan_suppressions.txt:report_objects=1"
-    }, 
-    "timeout_multiplier": 3
+    }
   }, 
   {
     "config": "dbg"
@@ -39,7 +36,6 @@
   }, 
   {
     "config": "memcheck", 
-    "timeout_multiplier": 10, 
     "tool_prefix": [
       "valgrind", 
       "--tool=memcheck", 
@@ -51,26 +47,22 @@
     "environ": {
       "ASAN_OPTIONS": "detect_leaks=1:color=always", 
       "LSAN_OPTIONS": "suppressions=tools/lsan_suppressions.txt:report_objects=1"
-    }, 
-    "timeout_multiplier": 3
+    }
   }, 
   {
     "config": "tsan", 
     "environ": {
       "TSAN_OPTIONS": "suppressions=tools/tsan_suppressions.txt:halt_on_error=1:second_deadlock_stack=1"
-    }, 
-    "timeout_multiplier": 5
+    }
   }, 
   {
     "config": "ubsan", 
     "environ": {
       "UBSAN_OPTIONS": "halt_on_error=1:print_stacktrace=1"
-    }, 
-    "timeout_multiplier": 1.5
+    }
   }, 
   {
-    "config": "msan", 
-    "timeout_multiplier": 4
+    "config": "msan"
   }, 
   {
     "config": "mutrace"
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 5aae3432e16..c1822886795 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -234,6 +234,17 @@ class CLanguage(object):
         timeout_scaling = 1
         if polling_strategy == 'poll-cv':
           timeout_scaling *= 5
+
+        # Scale overall test timeout if running under various sanitizers.
+        config = self.args.config
+        if ('asan' in config
+            or config == 'msan'
+            or config == 'tsan'
+            or config == 'ubsan'
+            or config == 'helgrind'
+            or config == 'memcheck'):
+          timeout_scaling *= 20
+
         if self.config.build_config in target['exclude_configs']:
           continue
         if self.args.iomgr_platform in target.get('exclude_iomgrs', []):