diff --git a/SDL2pp/Rect.cc b/SDL2pp/Rect.cc
index af16f76..d04f598 100644
--- a/SDL2pp/Rect.cc
+++ b/SDL2pp/Rect.cc
@@ -171,6 +171,20 @@ Rect& Rect::Union(const Rect& rect) {
 	return *this;
 }
 
+Rect Rect::GetExtension(unsigned int amount) const {
+	Rect r = *this;
+	r.Extend(amount);
+	return r;
+}
+
+Rect& Rect::Extend(unsigned int amount) {
+	x -= amount;
+	y -= amount;
+	w += amount * 2;
+	h += amount * 2;
+	return *this;
+}
+
 Optional<Rect> Rect::GetIntersection(const Rect& rect) const {
 	if (!Intersects(rect))
 		return NullOpt;
diff --git a/SDL2pp/Rect.hh b/SDL2pp/Rect.hh
index e45eb0d..79f7139 100644
--- a/SDL2pp/Rect.hh
+++ b/SDL2pp/Rect.hh
@@ -346,6 +346,26 @@ public:
 	////////////////////////////////////////////////////////////
 	Rect& Union(const Rect& rect);
 
+	////////////////////////////////////////////////////////////
+	/// \brief Get a rect extended by specified amount of pixels
+	///
+	/// \param[in] int Number of pixels to extend by
+	///
+	/// \returns Reference to self
+	///
+	////////////////////////////////////////////////////////////
+	Rect GetExtension(unsigned int amount) const;
+
+	////////////////////////////////////////////////////////////
+	/// \brief Extend a rect by specified amount of pixels
+	///
+	/// \param[in] int Number of pixels to extend by
+	///
+	/// \returns Extended rect
+	///
+	////////////////////////////////////////////////////////////
+	Rect& Extend(unsigned int amount);
+
 	////////////////////////////////////////////////////////////
 	/// \brief Calculate intersection with another rect
 	///
diff --git a/tests/test_pointrect.cc b/tests/test_pointrect.cc
index 780baf0..bb38842 100644
--- a/tests/test_pointrect.cc
+++ b/tests/test_pointrect.cc
@@ -240,6 +240,15 @@ BEGIN_TEST()
 		EXPECT_TRUE(Rect(30, 40, 1, 1).Union(Rect(10, 20, 1, 1)) == Rect::FromCorners(10, 20, 30, 40));
 	}
 
+	{
+		// Rect extend
+		EXPECT_TRUE(Rect(10, 20, 30, 40).GetExtension(0) == Rect(10, 20, 30, 40));
+		EXPECT_TRUE(Rect(10, 20, 30, 40).GetExtension(10) == Rect(0, 10, 50, 60));
+
+		EXPECT_TRUE(Rect(10, 20, 30, 40).Extend(0) == Rect(10, 20, 30, 40));
+		EXPECT_TRUE(Rect(10, 20, 30, 40).Extend(10) == Rect(0, 10, 50, 60));
+	}
+
 	{
 		// Rect offset
 		Rect r(1, 2, 3, 4);