diff --git a/isometric-park-fna/DebugWindow.cs b/isometric-park-fna/DebugWindow.cs
--- a/isometric-park-fna/DebugWindow.cs
+++ b/isometric-park-fna/DebugWindow.cs
@@ -20,7 +20,7 @@
         public Vector2 mouseGrid;
         public Boolean hasTree;
         public int tilesDrawn;
-        internal object updateTime;
+        public TimeSpan updateTime;
     }
 
     public class DebugWindow
@@ -118,6 +118,7 @@
             ImGui.Begin("Debug", ref show);
             ImGui.Text(string.Format("fps: {0:F3}", debugInfo.fps));
             ImGui.Text(string.Format("Draw Time: {0:F3}", debugInfo.drawTime.TotalMilliseconds.ToString()));
+            ImGui.Text(string.Format("Update Time: {0:F3}", debugInfo.updateTime.TotalMilliseconds.ToString()));
             ImGui.Text(string.Format("Tiles Drawn: {0:F}", debugInfo.tilesDrawn));
 
 
diff --git a/isometric-park-fna/FNAGame.cs b/isometric-park-fna/FNAGame.cs
--- a/isometric-park-fna/FNAGame.cs
+++ b/isometric-park-fna/FNAGame.cs
@@ -268,6 +268,9 @@
 	protected override void Update(GameTime gameTime)
 	{
 
+		Stopwatch stopWatch = new Stopwatch();
+		stopWatch.Start();
+
 		float volume = 1.0f;
 		float pitch = 0.0f;
 		float pan = 0.0f;
@@ -419,6 +422,9 @@
 
 		this.keyboardPrev = keyboardCur;
 
+		stopWatch.Stop();
+		this.updateTime = stopWatch.Elapsed;
+
 		base.Update(gameTime);
 
 	}