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Everyday Life Calculators
Picture Frame Mat Size Calculator
Calculate the outer mat board size needed to frame artwork with a chosen uniform border width.
Mat outer width
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Mat outer height
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About the Picture Frame Mat Size Calculator
A mat board sits between artwork and frame, adding an even border on all sides. Getting the outer mat size right means adding the border width to both sides of the artwork's dimensions.
Formula: Mat Outer Width = Artwork Width + (2 × Border Width); Mat Outer Height = Artwork Height + (2 × Border Width)
The resulting outer dimensions are also the minimum frame opening size you'll need to buy or have cut.
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