| US Men's | Foot Length (in.) | UK | EUR | US Women's | JP |
| 4 | 8.5 | 3.5 | 36 | 5 W | 22 |
| 4.5 | 8.7 | 4 | 36 2/3 | 5.5 W | 22.5 |
| 5 | 8.9 | 4.5 | 37 1/3 | 6 W | 23 |
| 5.5 | 9.1 | 5 | 38 | 6.5 W | 23.5 |
| 6 | 9.3 | 5.5 | 38 2/3 | 7 W | 24 |
| 6.5 | 9.4 | 6 | 39 1/3 | 7.5 W | 24.5 |
| 7 | 9.6 | 6.5 | 40 | 8 W | 25 |
| 7.5 | 9.8 | 7 | 41 2/3 | 8.5 W | 25.5 |
| 8 | 10 | 7.5 | 41 1/3 | 9 W | 26 |
| 8.5 | 10.2 | 8 | 42 | 9.5 W | 26.5 |
| 9 | 10.4 | 8.5 | 42 2/3 | 10 W | 27 |
| 9.5 | 10.6 | 9 | 43 1/3 | 10.5 W | 27.5 |
| 10 | 10.8 | 9.5 | 44 | 11 W | 28 |
| 10.5 | 11 | 10 | 44 2/3 | 11.5 W | 28.5 |
| 11 | 11.2 | 10.5 | 45 1/3 | 12 W | 29 |
| 11.5 | 11.4 | 11 | 46 | 12.5 W | 29.5 |
| 12 | 11.6 | 11.5 | 46 2/3 | 13 W | 30 |
| 12.5 | 11.8 | 12 | 47 1/3 | 13.5 W | 30.5 |
| 13 | 12 | 12.5 | 48 | 14 W | 31 |
| 13.5 | 12.2 | 13 | 48 2/3 | 14.5 W | 31.5 |
| 14 | 12.4 | 13.5 | 49 1/3 | 15 W | 32 |
| 14.5 | 12.6 | 14 | 50 | 15.5 W | 32.5 |
| 15 | 12.8 | 14.5 | 50 2/3 | 16 W | 33 |