| AU Mens | AU Womens | UK | US Mens | US Womens | EU | Measurement |
| 2 | 4 | 2 | 3 | 4 | 35 | 21 cm |
| 3 | 5 | 3 | 4 | 5 | 36 | 22 cm |
| 4 | 6 | 4 | 5 | 6 | 37 | 22.75 cm |
| 5 | 7 | 5 | 6 | 7 | 38 | 23.5 cm |
| 6 | 8 | 6 | 7 | 8 | 39 | 24 cm |
| 7 | 9 | 7 | 8 | 9 | 40 | 24.5 cm |
| 8 | 10 | 8 | 9 | 10 | 41 | 25.25 cm |
| 9 | 11 | 9 | 10 | 11 | 42 | 26 cm |
| 10 | 12 | 10 | 11 | 12 | 43 | 26.75 cm |
| 11 | 13 | 11 | 12 | 13 | 44 | 27.5 cm |
| 12 | 14 | 12 | 13 | 14 | 45 | 28.5 cm |
| 13 | 15 | 13 | 14 | 15 | 46 | 29.25 cm |
| 14 | 16 | 14 | 15 | 16 | 47 | 30 cm |
| 15 | 17 | 15 | 16 | 17 | 48 | 31 cm |
All sizing is Australian Mens. E.g. for AU Womens Size 8, select for purchase AU Mens size 6. Select Carefully.