| Women's (US) | Men's (US) | Women's (UK) | Men's (UK) | Women's (Euro) | Men's (Euro) | CM (Internal Length) |
|---|---|---|---|---|---|---|
| 5 | - | 2.5 | - | 35 | - | 22 |
| 6 | - | 3.5 | - | 35.5 | - | 23 |
| 6.5 | - | 4 | - | 36 | - | 23.5 |
| 7 | - | 4.5 | - | 37.5 | - | 24 |
| 7.5 | - | 5 | - | 38 | - | 24.5 |
| 8 | 7 | 5.5 | 6 | 39 | 39 | 25 |
| 8.5 | 7.5 | 6 | 6.5 | 39.5 | 40 | 25.5 |
| 9 | 8 | 6.5 | 7 | 40 | 41 | 26 |
| 9.5 | 8.5 | 7 | 7.5 | 40.5 | 41.5 | 26.5 |
| 10 | 9 | 7.5 | 8 | 41 | 42 | 27 |
| 10.5 | 9.5 | 8 | 8.5 | 42 | 42.5 | 27.5 |
| 11 | 10 | 8.5 | 9 | 42.5 | 43 | 28 |
| 11.5 | 10.5 | 9 | 9.5 | 43 | 44 | 28.5 |
| 12 | 11 | 9.5 | 10 | 43.5 | 44.5 | 29 |
| 12.5 | 11.5 | 10 | 10.5 | 44 | 45 | 29.5 |
| 13 | 12 | 10.5 | 11 | 44.5 | 46 | 30 |
| - | 12.5 | - | 11.5 | - | 47 | 30.5 |
| - | 13 | - | 12 | - | 47.5 | 31 |
| - | 13.5 | - | 12.5 | - | 48 | 31.5 |
| - | 14 | - | 13 | - | 48.5 | 32 |
| - | 14.5 | - | 13.5 | - | 49 | 32.5 |
| - | 15 | - | 14 | - | 49.5 | 33 |
| - | 16 | - | 15 | - | 50.5 | 34 |
| US Width | Description |
|---|---|
| A | Slim (S) |
| C | Medium (M) |
| DE | Wide (W) |