| US | UK | EU | Inches | Milimeters |
|---|---|---|---|---|
| C8 | 8 | 24-25 | 5 7/8 | 149 |
| C9 | 9 | 25-26 | 6 1/8 | 157 |
| C10 | 10 | 27-28 | 6 1/2 | 166 |
| C11 | 11 | 28-29 | 6 7/8 | 174 |
| C12 | 12 | 29-30 | 7 1/8 | 183 |
| C13 | 13 | 30-31 | 7 1/2 | 191 |
| J1 | 1 | 32-33 | 7 7/8 | 200 |
| J2 | 2 | 33-34 | 8 1/8 | 208 |
| J3 | 3 | 34-35 | 8 1/2 | 217 |
| J4 | 4 | 36-37 | 8 7/8 | 225 |
| J5 | 5 | 37-38 | 9 1/8 | 233 |
| J6 | 6 | 38-39 | 9 1/2 | 242 |
