Nike Size Guide
Nike
| UK | EU | US |
| 3 | 35 | 3.5Y / W5 |
| 3.5 | 35.5 | 4Y / W5.5 |
| 4 | 36.5 | 4.5Y / W6 |
| 4.5 | 37.5 | 5Y / W6.5 |
| 5 | 38 | 5.5Y / W7 |
| 5.5 | 38.5 | 6Y / W7.5 |
| 6 | 39 | 6.5Y / W8 |
| 6.5 | 40.5 | 7.5Y / W9 |
| 7 | 41 | 8M / W9.5 |
| 7.5 | 42 | 8.5M / W10 |
| 8 | 42.5 | 9M / W10.5 |
| 8.5 | 43 | 9.5M / W11 |
| 9 | 44 | 10 |
| 9.5 | 44.5 | 10.5 |
| 10 | 45 | 11 |
| 10.5 | 45.5 | 11.5 |
| 11 | 46 | 12 |
| 11.5 | 47 | 12.5 |
| 12 | 47.5 | 13 |