| US | Euro | UK | Inches | CM |
|---|---|---|---|---|
| 4 | 35 | 2 | 8.1875 | 20.8 |
| 4.5 | 35 | 2.5 | 8.375 | 21.3 |
| 5 | 35-36 | 3 | 8.5 | 21.6 |
| 5.5 | 36 | 3.5 | 8.75 | 22.2 |
| 6 | 36-37 | 4 | 8.875 | 22.5 |
| 6.5 | 37 | 4.5 | 9.0625 | 23 |
| 7 | 37-38 | 5 | 9.25 | 23.5 |
| 7.5 | 38 | 5.5 | 9.375 | 23.8 |
| 8 | 38-39 | 6 | 9.5 | 24.1 |
| 8.5 | 39 | 6.5 | 9.6875 | 24.6 |
| 9 | 39-40 | 7 | 9.875 | 25.1 |
| 9.5 | 40 | 7.5 | 10 | 25.4 |
| 10 | 40-41 | 8 | 10.1875 | 25.9 |
| 10.5 | 41 | 8.5 | 10.3125 | 26.2 |
| 11 | 41-42 | 9 | 10.5 | 26.7 |
| 11.5 | 42 | 9.5 | 10.6875 | 27.1 |
| 12 | 42-43 | 10 | 10.875 | 27.6 |