Picture Frame Mat Calculator
Frame and mat sizes for any image, with bottom-weighting.
Frame size needed
12 × 14 in
Custom size
Mat border: top 2 · sides 2 · bottom 2 in
Mat opening: 8 × 10 in
Mat material: 88 sq in
Standard frame sizes
- 5x7
- 8x10
- 11x14
- 16x20
- 18x24
- 24x36
For a balanced look, mat width should be 1/4 to 1/2 of the image's shorter side. For portrait orientation, weighting the bottom by 0.5 to 1 inch creates a classic "gallery look" that flatters the image.
About
Type your image dimensions and desired mat border. The tool returns the frame size you need to buy and tells you whether it lines up with a standard size (8x10, 11x14, 16x20, etc.).
How to use
- Enter image dimensions.
- Pick mat border width and bottom-weight.
FAQ
Why bottom-weighting?+
Adding 0.5 to 1 inch to the bottom mat balances the visual weight (the image looks centered even though geometrically it sits high). Standard for portraits and gallery framing.