Paper sizes (ISO A series & Letter)
ISO A series halves the long side each step down (A4 is the office default in most countries).
| Size | mm | inches (approx) |
|---|---|---|
| A0 | 841 × 1189 | 33.1 × 46.8 |
| A1 | 594 × 841 | 23.4 × 33.1 |
| A2 | 420 × 594 | 16.5 × 23.4 |
| A3 | 297 × 420 | 11.7 × 16.5 |
| A4 | 210 × 297 | 8.27 × 11.7 |
| A5 | 148 × 210 | 5.83 × 8.27 |
| A6 | 105 × 148 | 4.13 × 5.83 |
| Letter (US) | 216 × 279 | 8.5 × 11 |
| Legal (US) | 216 × 356 | 8.5 × 14 |
| Tabloid / Ledger | 279 × 432 | 11 × 17 |
Notes
- Printer margins reduce usable area.
- B-series and Japanese B sizes are different standards.