| US / CA | EU | UK | Foot Length | Age Group |
|---|---|---|---|---|
| Toddler 10 | 9 | 28 | 6.3 | 2-4 years |
| Toddler 10.5 | 9.5 | 28.5 | 6.5 | 4-6 years |
| Little Kid 11 | 10 | 29 | 6.7 | 4-6 years |
| Little Kid 11.5 | 10.5 | 29.5 | 6.9 | 4-6 years |
| Little Kid 12 | 11 | 30 | 7.1 | 4-6 years |
| Little Kid 12.5 | 11.5 | 30.5 | 7.3 | 4-6 years |
| Little Kid 13 | 12 | 31 | 7.5 | 4-6 years |
| Little Kid 13.5 | 12.5 | 31.5 | 7.7 | 4-6 years |
| Little Kid 1 | 13 | 32 | 7.9 | 4-6 years |
| Little Kid 1.5 | 13.5 | 32.4 | 8.1 | 4-6 years |
| Little Kid 2 | 1 | 33 | 8.3 | 6-9 years |
| Little Kid 2.5 | 1.5 | 33.5 | 8.5 | 6-9 years |
| Big Kid 3 | 2 | 34 | 8.7 | 6-9 years |
| Big Kid 3.5 | 2.5 | 34.5 | 8.9 | 6-9 years |
| Big Kid 4 | 3 | 35 | 9.1 | 6-9 years |
| Big Kid 4.5 | 3.5 | 35.5 | 9.3 | 6-9 years |
| Big Kid 5 | 4 | 36 | 9.5 | 6-9 years |
| Big Kid 5.5 | 4.5 | 36.5 | 9.7 | 6-9 years |
| Big Kid 6 | 5 | 37 | 9.8 | 10-12 years |
| US / CA | EU | UK | Foot Length | Age Group |
|---|---|---|---|---|
| Toddler 10 | 9 | 28 | 16 | 2-4 years |
| Toddler 10.5 | 9.5 | 28.5 | 16.5 | 4-6 years |
| Little Kid 11 | 10 | 29 | 17 | 4-6 years |
| Little Kid 11.5 | 10.5 | 29.5 | 17.5 | 4-6 years |
| Little Kid 12 | 11 | 30 | 18 | 4-6 years |
| Little Kid 12.5 | 11.5 | 30.5 | 18.5 | 4-6 years |
| Little Kid 13 | 12 | 31 | 19 | 4-6 years |
| Little Kid 13.5 | 12.5 | 31.5 | 19.5 | 4-6 years |
| Little Kid 1 | 13 | 32 | 20 | 4-6 years |
| Little Kid 1.5 | 13.5 | 32.4 | 20.5 | 4-6 years |
| Little Kid 2 | 1 | 33 | 21 | 6-9 years |
| Little Kid 2.5 | 1.5 | 33.5 | 21.5 | 6-9 years |
| Big Kid 3 | 2 | 34 | 22 | 6-9 years |
| Big Kid 3.5 | 2.5 | 34.5 | 22.5 | 6-9 years |
| Big Kid 4 | 3 | 35 | 23 | 6-9 years |
| Big Kid 4.5 | 3.5 | 35.5 | 23.5 | 6-9 years |
| Big Kid 5 | 4 | 36 | 24 | 6-9 years |
| Big Kid 5.5 | 4.5 | 36.5 | 24.5 | 6-9 years |
| Big Kid 6 | 5 | 37 | 25 | 10-12 years |