diff --git a/region.cpp b/region.cpp
index c076a273..a2b20061 100644
--- a/region.cpp
+++ b/region.cpp
@@ -69,6 +69,15 @@ util::region<T>::diameter (void) const
 }
 
 
+//-----------------------------------------------------------------------------
+template <typename T>
+util::extent<typename util::region<T>::size_type>
+util::region<T>::size (void) const
+{
+    return { w, h };
+}
+
+
 //-----------------------------------------------------------------------------
 template <typename T>
 void
diff --git a/region.hpp b/region.hpp
index 3af41a92..b89d6a79 100644
--- a/region.hpp
+++ b/region.hpp
@@ -47,6 +47,8 @@ namespace util {
 
         size_type area     (void) const;
         size_type diameter (void) const;
+        util::extent<size_type>  size (void) const;
+
         void scale (T factor);
 
         bool empty (void) const;