diff --git a/glfwcanvas/glfwcanvas.go b/glfwcanvas/glfwcanvas.go
index b2c0c8a..556d863 100644
--- a/glfwcanvas/glfwcanvas.go
+++ b/glfwcanvas/glfwcanvas.go
@@ -170,3 +170,8 @@ func (wnd *Window) MainLoop(run func()) {
 		wnd.FinishFrame()
 	}
 }
+
+// Size returns the current width and height of the window
+func (wnd *Window) Size() (int, int) {
+	return wnd.Window.GetSize()
+}
diff --git a/sdlcanvas/sdlcanvas.go b/sdlcanvas/sdlcanvas.go
index 3809029..c7f044d 100644
--- a/sdlcanvas/sdlcanvas.go
+++ b/sdlcanvas/sdlcanvas.go
@@ -250,3 +250,9 @@ func (wnd *Window) MainLoop(run func()) {
 		wnd.FinishFrame()
 	}
 }
+
+// Size returns the current width and height of the window
+func (wnd *Window) Size() (int, int) {
+	w, h := wnd.Window.GetSize()
+	return int(w), int(h)
+}