| US - Kids | US - Men | US - Women | UK | EU | CM / JP | Foot Length (in) |
|---|---|---|---|---|---|---|
| 1Y | 1 | 2.5 | 13.5 | 32 | 20 | 7 15/16 |
| 1.5Y | 1.5 | 3 | 1 | 33 | 20.5 | 8 1/16 |
| 2Y | 2 | 3.5 | 1.5 | 33.5 | 21 | 8 4/16 |
| 2.5Y | 2.5 | 4 | 2 | 34 | 21.5 | 8 7/16 |
| 3Y | 3 | 4.5 | 2.5 | 35 | 22 | 8 9/16 |
| 3.5Y | 3.5 | 5 | 3 | 35.5 | 22.5 | 8 12/16 |
| 4Y | 4 | 5.5 | 3.5 | 36 | 23 | 8 13/16 |
| 4.5Y | 4.5 | 6 | 4 | 36.5 | 23.5 | 8 15/16 |
| 5Y | 5 | 6.5 | 4.5 | 37.5 | 23.5 | 9 2/16 |
| 5.5Y | 5.5 | 7 | 5 | 38 | 24 | 9 4/16 |
| 6Y | 6 | 7.5 | 5.5 | 38.5 | 24 | 9 6/16 |
| 6.5Y | 6.5 | 8 | 6 | 39 | 24.5 | 9 9/16 |
| 7Y | 7 | 8.5 | 6 | 40 | 25 | 9 11/16 |
