Size Chart Guidelines
| 'A' Format | METRIC (mm) | IMPERIAL (inches) |
| A0 | 841 x 1189 | 33.11 x 46.81 |
| A1 | 594 x 841 | 23.38 x 33.11 |
| A2 | 420 × 594 | 16.53 x 23.38 |
| A3 | 297 × 420 | 11.69 x 16.53 |
| A4 | 210 × 297 | 8.26 x 11.69 |
| A5 | 148 × 210 | 5.82 x 8.26 |
| A6 | 105 × 148 | 4.13 x 5.82 |
| 'SRA' Format | METRIC (mm) | IMPERIAL (inches) |
| SRA0 | 900 × 1280 | 35.43 x 50.39 |
| SRA1 | 640 × 900 | 25.19 x 35.43 |
| SRA2 | 450 × 640 | 17.71 x 25.19 |
| SRA3 | 320 × 450 | 12.60 x 17.71 |
| SRA4 | 225 × 320 | 8.85 x 12.60 |