| EU | CM | UK Men | UK Women |
|---|---|---|---|
| 36 | 22 | — | 3 |
| 36.5 | 22.5 | — | 3.5 |
| 37 | 23 | — | 4 |
| 37.5 | 23.5 | — | 4.5 |
| 38 | 24 | — | 5 |
| 38.5 | 24.5 | — | 5.5 |
| 39 | 25 | — | 6 |
| 40 | 25 | 6.5 | 6.5 |
| 40.5 | 25.5 | 7 | 7 |
| 41 | 26 | 7.5 | 7.5 |
| 42 | 26.5 | 8 | 8 |
| 42.5 | 27 | 8.5 | 8.5 |
| 43 | 27.5 | 9 | 9 |
| 44 | 28 | 9.5 | 10 |
| 44.5 | 28.5 | 10 | — |
| 45 | 29 | 10.5 | — |
Based on the official On size chart (on.com).