| US Size | Inches | Europe | UK |
|---|---|---|---|
| 6 | 9 1/4 | 39 | 5.5 |
| 6.5 | 9 1/2 | 39 | 6 |
| 7 | 9 5/8 | 40 | 6.5 |
| 7.5 | 9 3/4 | 40/41 | 7 |
| 8 | 9 15/16 | 41 | 7.5 |
| 8.5 | 10 1/8 | 41/42 | 8 |
| 9 | 10 1/4 | 42 | 8.5 |
| 9.5 | 10 7/16 | 42/43 | 9 |
| 10 | 10 9/16 | 43 | 9.5 |
| 10.5 | 10 3/4 | 43/44 | 10 |
| 11 | 10 15/16 | 44 | 10.5 |
| 11.5 | 11 1/8 | 44/45 | 11 |
| 12 | 11 1/4 | 45 | 11.5 |
| 13 | 11 9/16 | 46 | 12.5 |
| 14 | 11 7/8 | 47 | 13.5 |
| 15 | 12 3/16 | 48 | 14.5 |
| 16 | 12 1/2 | 49 | 15.5 |
| 17 | 12 3/4 | . | 16.5 |
| 18 | 13 1/8 | . | 17.5 |
| 19 | 13 1/2 | . | 18.5 |
| 20 | 13 7/8 | . | 19.5 |