| US | UK | EU | Heel-Toe Measurement |
| 5 | 4 | 38 | 23.0 cm |
| 6 | 5 | 39 | 24.0 cm |
| 6.5 | 5.5 | 39.5 | 24.5 cm |
| 7 | 6 | 40 | 25.0 cm |
| 7.5 | 6.5 | 40.5 | 25.5 cm |
| 8 | 7 | 41 | 26.0 cm |
| 8.5 | 7.5 | 41.5 | 26.5 cm |
| 9 | 8 | 42 | 27.0 cm |
| 9.5 | 8.5 | 42.5 | 27.5 cm |
| 10 | 9 | 43 | 28.0 cm |
| 10.5 | 9.5 | 43.5 | 28.5 cm |
| 11 | 10 | 44 | 29.0 cm |
| 11.5 | 10.5 | 44.5 | 29.5 cm |
| 12 | 11 | 45 | 30.0 cm |