A-series paper for photo printing
| Format | Dimensions | Use |
|---|---|---|
| A5 | 14.8 × 21.0 cm | Small prints |
| A4 | 21.0 × 29.7 cm | Home printing |
| A3 | 29.7 × 42.0 cm | Posters |
Metric photo reference
Photo Sizes in CM: Standard Photo Dimensions Guide
Compare popular print sizes, understand nominal versus exact conversions, and match your photo to a frame without guesswork.
Quick reference
Common photo print sizes in centimeters
Retail metric labels are often rounded equivalents of familiar inch sizes. Confirm the printable area or frame opening when precision matters.
| Metric size | Approx. inches | Ratio | Typical use | Label |
|---|---|---|---|---|
| 10 × 15 cm | 4 × 6 in | 3:2 | Everyday snapshots | Most common |
| 13 × 18 cm | 5 × 7 in | About 7:5 | Portraits and gifts | Nominal metric |
| 13 × 13 cm | About 5.1 × 5.1 in | 1:1 | Square prints | Square |
| 20 × 25 cm | 8 × 10 in | 5:4 | Portraits and wall display | Nominal metric |
Exact conversion
CM and inch converter
One inch is exactly 2.54 centimeters.
Standard frame finder
Find a frame for your photo
We suggest only frames that can contain the complete print in either orientation.
Beyond standard prints
Paper and ID photo sizes
Paper formats are fixed. Identity-photo formats are country-specific and should always be checked with the issuing authority.
Passport photo examples by country
| Example | Dimensions | Authority |
|---|---|---|
| UK passport | 35 × 45 mm | GOV.UK |
| United States | 51 × 51 mm | U.S. Department of State |
| Canada | 50 × 70 mm | Government of Canada |
Requirements can change. Re-check the linked government guidance before submitting an application.
Before you order
How to choose a photo and frame size
Start with the finished print
Crop and print first, then measure the physical photo instead of relying only on the file ratio.
Decide on direct fit or a mat
Choose the same labelled size for a direct fit, or a larger frame and mat for visual breathing room.
Check the usable opening
Frame lips and mat openings overlap a small part of the image. Confirm seller measurements before ordering.
Practical answers
Photo size FAQ
What is the most common photo size in centimeters?
10 × 15 cm is the common metric retail label for a print close to 4 × 6 in.
Is 10 × 15 cm exactly the same as 4 × 6 in?
No. An exact 4 × 6 in print converts to 10.16 × 15.24 cm.
What frame fits a 10 × 15 cm photo?
Use a frame labelled 10 × 15 cm. A 4 × 6 in frame may fit, but confirm the opening dimensions before buying.
Are passport photo sizes the same worldwide?
No. Passport photo requirements differ by country and must be checked with the issuing authority.