| UK | Inches | Cm. | Europe | USA | Aus |
|---|---|---|---|---|---|
| 2.5 | 9 | 22.8 | 35 | 5 | 3.5 |
| 3 | 9.13 | 23.1 | 35.5 | 5.5 | 4 |
| 3.5 | 9.25 | 23.5 | 36 | 6 | 4.5 |
| 4 | 9.38 | 23.8 | 37 | 6.5 | 5 |
| 4.5 | 9.50 | 24.1 | 37.5 | 7 | 5.5 |
| 5 | 9.63 | 24.5 | 38 | 7.5 | 6 |
| 5.5 | 9.75 | 24.8 | 38.5 | 8 | 6.5 |
| 6 | 9.88 | 25.1 | 39 | 8.5 | 7 |
| 6.5 | 10.00 | 25.4 | 40 | 9 | 7.5 |
| 7 | 10.13 | 25.7 | 41 | 9.5 | 8 |
| 7.5 | 10.25 | 26 | 42 | 10 | 8.5 |
| 8 | 10.50 | 26.7 | 43 | 10.5 | 9 |
| 9.5 | 10.75 | 27.3 | 44 | 12 | 10.5 |
| 10.5 | 11.00 | 27.9 | 45 | 13 | 11.5 |