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The frame and poster sizes most buyers can find in shops, in inches, centimetres and A sizes, with the print each mat opening usually holds. Use it to choose print sizes that fit ready-made frames.
| Frame size (in) | Common use | With a mat, holds a print of |
|---|---|---|
| 4×6 | Photos, small prints | — |
| 5×7 | Photos, cards, small prints | 4×6 |
| 8×10 | Prints and photos | 5×7 |
| 8.5×11 | Letter-size prints and certificates | — |
| 11×14 | Prints and photography | 8×10 |
| 12×12 | Square prints | 8×8 |
| 12×16 | 3:4 prints | varies; often 8×10 or 9×12 |
| 16×20 | Medium wall art | 11×14 |
| 18×24 | Posters and medium wall art | 12×18 |
| 20×24 | Medium wall art | 16×20 |
| 24×36 | Large posters and wall art | — (usually unmatted) |
| 27×40 | Film posters | — |
| 30×40 | Large wall art | 24×36 |
| Frame size (cm) | Common use | With a mat, holds a print of |
|---|---|---|
| 13×18 | Photos, small prints | 9×13 |
| 18×24 | Prints and photos | 13×18 |
| 21×29.7 (A4) | A4 prints | A5 (14.8×21) |
| 24×30 | Prints and photos | 18×24 |
| 30×40 | Prints and posters | A4 (21×29.7) or 20×30 |
| 29.7×42 (A3) | A3 prints | A4 |
| 40×50 | Wall art | 30×40 |
| 42×59.4 (A2) | A2 posters | A3 |
| 50×70 | Posters and wall art | 40×50 |
| 61×91.5 | Large posters | — (usually unmatted) |
| 70×100 | Large posters and wall art | 50×70 |
| Poster | Inches | Centimetres | Ratio |
|---|---|---|---|
| A4 | 8.3 × 11.7 | 21 × 29.7 | 1:1.414 |
| A3 | 11.7 × 16.5 | 29.7 × 42 | 1:1.414 |
| A2 | 16.5 × 23.4 | 42 × 59.4 | 1:1.414 |
| A1 | 23.4 × 33.1 | 59.4 × 84.1 | 1:1.414 |
| A0 | 33.1 × 46.8 | 84.1 × 118.9 | 1:1.414 |
| Small (US) | 11 × 17 | 27.9 × 43.2 | about 2:3 |
| Medium (US) | 18 × 24 | 45.7 × 61 | 3:4 |
| Large (US) | 24 × 36 | 61 × 91.4 | 2:3 |
| Film poster | 27 × 40 | 68.6 × 101.6 | about 2:3 |
| European poster | 19.7 × 27.6 | 50 × 70 | 5:7 |
| Large European poster | 27.6 × 39.4 | 70 × 100 | about 1:1.43 |
If you sell prints, offer sizes that fit ready-made frames: buyers are far more likely to order a print they can frame the same day. Mat pairings vary by brand, so check the mat opening of the frame you recommend. For the ratio families behind these sizes, read our print ratio guide, and use the frame and mat calculator for custom sizes.
Want to see the result on a wall? Browse WallMock’s reviewed rooms.