| Foot Length (cm) | US Size | UK Size | EU Size | Approx. Age |
|---|---|---|---|---|
| 21 cm | US 1Y | UK 13 | EU 32 | 6–7 years |
| 22 cm | US 2.5Y | UK 1.5 | EU 34 | 7–8 years |
| 23 cm | US 4Y | UK 3 | EU 36 | 9–10 years |
| 24 cm | US 5Y | UK 4 | EU 37 | 10–11 years |
| 25 cm | US 6Y | UK 5 | EU 38 | 11–12 years |
| 26 cm | US 7Y | UK 6 | EU 39 | 12–13 years |
| 27 cm | US 8Y | UK 7 | EU 40 | Teenagers |
| 28 cm | US 9Y | UK 8 | EU 41 | Teenagers |
| 29 cm | US 10Y | UK 9 | EU 42 | Teenagers |
| 30 cm | US 11Y | UK 10 | EU 43 | Teenagers |
| 31 cm | US 12Y | UK 11 | EU 44 | Older Teens/Adults |
| 32 cm | US 13Y | UK 12 | EU 45 | Older Teens/Adults |
