VBA gives wrong plotarea width?

I want to get the PlotArea width and height in order to calculate t开发者_JAVA技巧he proportion. I used ActiveChart.PlotArea.Width to get the width, and then tested the width using Photoshop.

I discovered that the width returned by ActiveChart.PlotArea.Width is wrong.

Image shows what I am talking about:

I have no Idea why...

Please help me to understand why it happens and how to fix it...

Thanks!

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PlotArea.Width is returning the width in points not pixels. http://msdn.microsoft.com/en-us/library/ff198324.aspx

Points are a unit of length. Pixels are variable on a number of factors like monitor, fonts, truefont settings, ect. Here is a SO post about converting pixels to points: Convert Pixels to Points