| UK | EU | US Men | US Women | Length (cm) |
| 2 | 34 | 2.5 | 4 | 21 |
| 2.5 | 34.5 | 3 | 4.5 | 21-21.5 |
| 3 | 35 | 3.5 | 5 | 21.5-22 |
| 3.5 | 36 | 4 | 5.5 | 22 |
| 4 | 37 | 4.5 | 6 | 22.5 |
| 4.5 | 37.5 | 5 | 6.5 | 23 |
| 5 | 38 | 5.5 | 7 | 23.5 |
| 5.5 | 38.5 | 6 | 7.5 | 24 |
| 6 | 39.5 | 6.5 | 8 | 24-24.5 |
| 6.5 | 40 | 7 | 8.5 | 24.5-25 |
| 7 | 40.5 | 7.5 | 9 | 25 |
| 7.5 | 41.5 | 8 | 9.5 | 25.5 |
| 8 | 42 | 8.5 | 10 | 26 |
| 8.5 | 42.5 | 9 | 10.5 | 26.5 |
| 9 | 43 | 9.5 | 11 | 26.5-27 |
| 9.5 | 44 | 10 | 11.5 | 27-27.5 |
| 10 | 44.5 | 10.5 | 12 | 27.5 |
| 10.5 | 45 | 11 | 12.5 | 28 |
| 11 | 45.5 | 11.5 | 13 | 28.5 |
| 11.5 | 46.5 | 12 | 13.5 | 29 |
| 12 | 47 | 12.5 | 14 | 29.5 |
| 12.5 | 47.5 | 13 | 14.5 | 29.5-30 |
| 13 | 48 | 13.5 | 15 | 30-30.5 |
| 13.5 | 49 | 14 | 15.5 | 30.5 |
| 14 | 49.5 | 14.5 | 16 | 31 |
| 14.5 | 50 | 15 | 16.5 | 31.5 |
| 15 | 50.5 | 15.5 | 17 | 32 |
| 15.5 | 51 | 16 | 17.5 | 32-32.5 |
| 16 | 51.5 | 16.5 | 18 | 32.5-33 |
| 16.5 | 52 | 17 | - | 33 |
| 17 | 52.5 | 17.5 | - | 33.5 |
| 17.5 | 53 | 18 | - | 34 |
| 18 | 53.5 | 18.5 | - | 34.5 |
| 18.5 | 54 | 19 | - | 35 |
| 19 | 54.5 | 19.5 | - | 35-35.5 |
| 19.5 | 55 | 20 | - | 35.5-36 |
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