ARTWORK & MAT CALCULATOR

Framing your artwork doesn’t have to feel like a math problem. Simply enter the size of your artwork, choose inches or centimeters, and add the mat border you’d like around your piece.

The calculator will figure out the mat opening, finished mat size, and frame size for you. If you’d like to use a double mat, just check that option and add the amount of the second mat you want to peek through.

Your results will appear in both U.S. and metric measurements, along with a suggested ready-made frame size when one is available.

A little planning before you cut can save a lot of mat board later. 😊

Artwork & Mat

Enter your artwork size in inches or centimeters. Results are automatically shown in both.

Your Finished Presentation

Use these measurements when cutting your mat and choosing a frame.

Mat opening
Finished mat / frame size
Lower mat opening
Ready-made frame suggestions

How the sizes relate

Artwork

Your original painted or printed piece.

Mat opening

Slightly smaller than the artwork so the edges stay hidden beneath the mat.

Finished mat

The outside dimension that must match the inside size of your frame.

Common Ready-Made Frame Sizes

U.S.
5×7 · 8×10 · 9×12 · 11×14 · 12×16 · 14×18 · 16×20 · 18×24 · 20×24 · 20×30 · 22×28 · 24×30 · 24×36 in
Metric
10×15 · 13×18 · 15×20 · 18×24 · 20×25 · 20×30 · 21×30 · 24×30 · 30×40 · 30×45 · 40×50 · 40×60 · 50×70 · 60×80 cm

These are common ready-made frame sizes and are meant as a quick reference. Always measure your artwork, mat, and frame before cutting.