| US | UK | EU | (Inches) | (cm) |
|---|---|---|---|---|
| 2C | 1.5 | 17 | 3 15/16 | 10 |
| 3C | 2.5 | 18.5 | 4 4/16 | 10.8 |
| 4C | 3.5 | 19.5 | 4 9/16 | 11.6 |
| 5C | 4.5 | 21 | 4 15/16 | 12.5 |
| 6C | 5.5 | 22 | 5 4/16 | 13.3 |
| 7C | 6.5 | 23.5 | 5 9/16 | 14.2 |
| 8C | 7.5 | 25 | 5 15/16 | 15 |
| 9C | 8.5 | 26 | 6 4/16 | 15.9 |
| 10C | 9.5 | 27 | 6 9/16 | 16.7 |
| US | UK | EU | (Inches) | (cm) |
|---|---|---|---|---|
| 2C | 1.5 | 17 | 3 15/16 | 10 |
| 3C | 2.5 | 18.5 | 4 4/16 | 10.8 |
| 4C | 3.5 | 19.5 | 4 9/16 | 11.6 |
| 5C | 4.5 | 21 | 4 15/16 | 12.5 |
| 6C | 5.5 | 22 | 5 4/16 | 13.3 |
| 7C | 6.5 | 23.5 | 5 9/16 | 14.2 |
| 8C | 7.5 | 25 | 5 15/16 | 15 |
| 9C | 8.5 | 26 | 6 4/16 | 15.9 |
| 10C | 9.5 | 27 | 6 9/16 | 16.7 |
