| UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 |
| Heel-toe measurement | 22.1 cm | 22.5 cm | 22.9 cm | 23.3 cm | 23.8 cm | 24.2 cm | 24.6 cm | 25 cm | 25.5 cm | 25.9 cm | 26.3 cm | 26.7 cm | 27.1 cm | 27.6 cm | 28 cm | 28.4 cm | 28.8 cm | 29.3 cm |
| EU | 36 | 36 2/3 | 37 1/3 | 38 | 38 2/3 | 39 1/3 | 40 | 40 2/3 | 41 1/3 | 42 | 42 2/3 | 43 1/3 | 44 | 44 2/3 | 45 1/3 | 46 | 46 2/3 | 47 1/3 |
| US - Men's | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 |
| US - Women's | 5 | 5.5 | 6.5 | 6 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 |