@@ -1760,7 +1760,7 @@ def blit(self, bbox=None):
         """Blit the canvas in bbox (default entire canvas)."""
 
     def resize(self, w, h):
-        """Set the canvas size in pixels."""
+        """Set the canvas size in (physical) pixels."""
 
     def draw_event(self, renderer):
         """Pass a `DrawEvent` to all functions connected to ``draw_event``."""
 
@@ -421,6 +421,8 @@ def set_window_title(self, title):
 
     def resize(self, width, height):
         """Set the canvas size in pixels."""
+        width /= self.canvas.device_pixel_ratio
+        height /= self.canvas.device_pixel_ratio
         if self.toolbar:
             toolbar_size = self.toolbar.size_request()
             height += toolbar_size.height
 
@@ -372,6 +372,8 @@ def set_window_title(self, title):
 
     def resize(self, width, height):
         """Set the canvas size in pixels."""
+        width /= self.canvas.device_pixel_ratio
+        height /= self.canvas.device_pixel_ratio
         if self.toolbar:
             min_size, nat_size = self.toolbar.get_preferred_size()
             height += nat_size.height
 
@@ -2657,10 +2657,9 @@ def set_size_inches(self, w, h=None, forward=True):
         if forward:
             canvas = getattr(self, 'canvas')
             if canvas is not None:
-                dpi_ratio = getattr(canvas, '_dpi_ratio', 1)
                 manager = getattr(canvas, 'manager', None)
                 if manager is not None:
-                    manager.resize(*(size * self.dpi / dpi_ratio).astype(int))
+                    manager.resize(*(size * self.dpi).astype(int))
         self.stale = True
 
     def get_size_inches(self):