| US WOMEN | US KIDS | UK | EUROPE | Inches | (CM) |
| 5 | 3.5 | 2.5 | – | 8 ½ | 21.6 |
| 5.5 | 4 | 3 | 35 | 8 ⅝ | 21.9 |
| 6 | 4.5 | 3.5 | 36 | 8 ⅞ | 22.5 |
| 6.5 | 5 | 4 | 37 | 9 | 22.9 |
| 7 | 5.5 | 4.5 | 37.5 | 9 ⅛ | 23.2 |
| 7.5 | 6 | 5 | 38 | 9 ⅜ | 23.8 |
| 8 | 6.5 | 5.5 | 39 | 9 ½ | 24.1 |
| 8.5 | 7 | 6 | 39.5 | 9 ⅝ | 24.5 |
| 9 | – | 6.5 | 40 | 9 ⅞ | 25 |
| 9.5 | – | 7 | 41 | 10 | 25.4 |
| 10 | – | 7.5 | 41.5 | 10 ⅛ | 25.8 |
| 10.5 | – | 8 | 42 | 10 ⅜ | 26.2 |
| 11 | – | 8.5 | 42.5 | 10 ½ | 26.7 |
| 11.5 | – | 9 | 43 | 10 ⅝ | 27.1 |
| 12 | – | 9.5 | 44 | 10 ⅞ | 27.5 |
| – | – | 10 | 44.5 | 11 | 27.9 |
| – | – | 10.5 | 45 | 11 ⅛ | 28.3 |
| – | – | 11 | 46 | 11 ⅜ | 28.8 |
| – | – | 11.5 | 46.5 | 11 ½ | 29.2 |
| – | – | 12 | 47 | 11 ⅝ | 29.6 |
