The practical framing reference
Standard picture frame sizes, clearly compared.
Compare inch, metric, ISO, R-series, square, and panoramic formats. Convert measurements and find a frame that fits without guessing.
Smart match
Frame size recommendation
Recommended frame sizes
Exact conversion
Centimeter and inch conversion
Result
Fit checker
Bidirectional frame size calculator
Enter either portrait or landscape dimensions. The calculator treats rotated dimensions as the same size.
Reference library
Frame size systems
The dominant North American consumer standard, built around familiar photo-print dimensions such as 4 × 6, 5 × 7, and 8 × 10 inches.
Buying answers
Frequently asked questions
What are the most common picture frame sizes?
Common inch sizes include 4 × 6, 5 × 7, 8 × 10, 11 × 14, 16 × 20, and 20 × 24. Common metric sizes include 10 × 15, 13 × 18, 21 × 30, 30 × 40, and 50 × 70 cm.
How do I convert inches and centimeters?
Multiply inches by 2.54 to get centimeters. Divide centimeters by 2.54 to get inches.
Does a frame label describe the outside size?
Usually no. The label describes the artwork or backing size that fits inside. Moulding makes the outside dimensions larger.
How much should a mat overlap a photo?
A mat opening normally overlaps the photo by roughly 1/8 to 1/4 inch, or 3–6 mm, on each edge.
What should I check before buying online?
Check the usable opening, included mat opening, outside dimensions, rebate depth, and the seller's manufacturing tolerance.