diff --git a/modules/core/include/opencv2/core/types.hpp b/modules/core/include/opencv2/core/types.hpp
index c3644cbda0..16f7b3066e 100644
--- a/modules/core/include/opencv2/core/types.hpp
+++ b/modules/core/include/opencv2/core/types.hpp
@@ -322,6 +322,8 @@ public:
     Size_& operator = (const Size_& sz);
     //! the area (width*height)
     _Tp area() const;
+    //! aspect ratio (width/height)
+    double aspectRatio() const;
     //! true if empty
     bool empty() const;
 
@@ -1670,6 +1672,12 @@ _Tp Size_<_Tp>::area() const
     return result;
 }
 
+template<typename _Tp> inline
+double Size_<_Tp>::aspectRatio() const
+{
+    return width / static_cast<double>(height);
+}
+
 template<typename _Tp> inline
 bool Size_<_Tp>::empty() const
 {