Paper and Envelope Sizes
Compare ISO A-series paper, common North American sheets, and envelope dimensions.
| Size | Millimetres | Inches | Common use |
|---|---|---|---|
| A0 | 841 × 1189 | 33.1 × 46.8 | Posters, technical drawings |
| A1 | 594 × 841 | 23.4 × 33.1 | Posters |
| A2 | 420 × 594 | 16.5 × 23.4 | Posters, diagrams |
| A3 | 297 × 420 | 11.7 × 16.5 | Charts, folded brochures |
| A4 | 210 × 297 | 8.27 × 11.69 | International office paper |
| A5 | 148 × 210 | 5.83 × 8.27 | Notebooks, flyers |
| US Letter | 215.9 × 279.4 | 8.5 × 11 | North American office paper |
| US Legal | 215.9 × 355.6 | 8.5 × 14 | Legal documents |
| C4 envelope | 229 × 324 | 9.02 × 12.76 | Holds A4 flat |
| C5 envelope | 162 × 229 | 6.38 × 9.02 | Holds A5 or folded A4 |
| DL envelope | 110 × 220 | 4.33 × 8.66 | Holds A4 folded into thirds |
| US #10 envelope | 104.8 × 241.3 | 4.125 × 9.5 | Business correspondence |