Paper Sizes
Paper Sizes – ISO 216 Standard
The ISO 216 is an international standard for paper sizes used around the world. The standard defines three paper sizes, known as “A”, “B” and “C” Series.
A Series
Use our visual tool below to understand the A Series. The largest A Size available is A0, which when folded in half becomes A1. This pattern is continued through the whole A Series. The smallest A size available is the A8.
A Series Guide
| Size | Width (mm) | Height (mm) |
| A0 | 841 | 1189 |
| A1 | 594 | 841 |
| A2 | 420 | 594 |
| A3 | 297 | 420 |
| A4 | 210 | 297 |
| A5 | 148 | 210 |
| A6 | 105 | 148 |
| A7 | 74 | 105 |
| A8 | 52 | 74 |
B Series
Although it looks almost identical to the A Series, the B Series does differ very slightly. The sizes are based on the geometric mean of two consecutive A Series sheets. As an example, B3 is between A2 and A3 in size.
B Series Guide
| Size | Width (mm) | Height (mm) |
| B0 | 1000 | 1414 |
| B1 | 707 | 1000 |
| B2 | 500 | 707 |
| B3 | 353 | 500 |
| B4 | 250 | 353 |
| B5 | 176 | 250 |
| B6 | 125 | 176 |
| B7 | 88 | 125 |
| B8 | 62 | 88 |
C Series
Most commonly used for envelopes, the C Series is used to accompany the A and B series papers.
C Series Guide
| Size | Width (mm) | Height (mm) |
| C6 | 114 | 162 |
| C5 | 162 | 229 |
| C4 | 229 | 324 |
| C3 | 324 | 458 |
| DL | 110 | 220 |
If you are unsure about paper and envelope sizes call us on 023 8087 8037 or email us.