| US / CA | EU | UK | Foot Length | Age Group |
|---|---|---|---|---|
| Infant 0 | 15 | 0 | 3.8 | 0-12 months |
| Infant 1 | 16 | .5 | 4 | 0-12 months |
| Infant 2 | 17 | 1 | 4.5 | 0-12 months |
| Infant 3 | 18 | 2 | 4.8 | 12-24 months |
| Toddler 4 | 19 | 3 | 5 | 12-24 months |
| Toddler 5 | 20 | 4 | 5.3 | 12-24 months |
| Toddler 6 | 22 | 5 | 5.8 | 12-24 months |
| Toddler 7 | 23 | 6 | 6 | 2-4 years |
| Toddler 8 | 24 | 7 | 6.3 | 2-4 years |
| Toddler 9 | 25 | 8 | 6.5 | 2-4 years |
| Toddler 10 | 27 | 9 | 6.8 | 2-4 years |
| Little Kid 11 | 28 | 10 | 7 | 4-6 years |
| Little Kid 12 | 30 | 1 | 7.5 | 4-6 years |
| Little Kid 13 | 31 | 12 | 7.8 | 4-6 years |
| Little Kid 1 | 32 | 13 | 8.1 | 4-6 years |
| Little Kid 2 | 33 | 1 | 8.5 | 4-6 years |
| Big kid 3 | 34 | 2 | 8.8 | 6-9 years |
| Big Kid 4 | 36 | 3 | 9 | 6-9 years |
| Big Kid 5 | 37 | 4 | 9.1 | 6-9 years |
| Big Kid 5.5 | 37 | 4 | 9.3 | 6-9 years |
| Big Kid 6 | 38 | 5 | 9.5 | 10-12 years |
| Big Kid 6.5 | 38 | 5 | 9.8 | 10-12 years |
| Big Kid 7 | 39 | 6 | 8 | 10-12 years |
| Big Kid 7.5 | 39 | 6 | 8.5 | 10-12 years |
| US / CA | EU | UK | Foot Length | Age Group |
|---|---|---|---|---|
| Infant 0 | 15 | 0 | 9.5 | 0-12 months |
| Infant 1 | 16 | .5 | 10.2 | 0-12 months |
| Infant 2 | 17 | 1 | 11.4 | 0-12 months |
| Infant 3 | 18 | 2 | 12.1 | 12-24 months |
| Toddler 4 | 19 | 3 | 12.7 | 12-24 months |
| Toddler 5 | 20 | 4 | 13.3 | 12-24 months |
| Toddler 6 | 22 | 5 | 14.6 | 12-24 months |
| Toddler 7 | 23 | 6 | 15.2 | 2-4 years |
| Toddler 8 | 24 | 7 | 15.9 | 2-4 years |
| Toddler 9 | 25 | 8 | 16.5 | 2-4 years |
| Toddler 10 | 27 | 9 | 17.1 | 2-4 years |
| Little Kid 11 | 28 | 10 | 17.8 | 4-6 years |
| Little Kid 12 | 30 | 1 | 19 | 4-6 years |
| Little Kid 13 | 31 | 12 | 19.7 | 4-6 years |
| Little Kid 1 | 32 | 13 | 20.7 | 4-6 years |
| Little Kid 2 | 33 | 1 | 21.6 | 4-6 years |
| Big kid 3 | 34 | 2 | 22.2 | 6-9 years |
| Big Kid 4 | 36 | 3 | 22.9 | 6-9 years |
| Big Kid 5 | 37 | 4 | 23.2 | 6-9 years |
| Big Kid 5.5 | 37 | 4 | 23.5 | 6-9 years |
| Big Kid 6 | 38 | 5 | 24.1 | 10-12 years |
| Big Kid 6.5 | 38 | 5 | 24.8 | 10-12 years |
| Big Kid 7 | 39 | 6 | 20.3 | 10-12 years |
| Big Kid 7.5 | 39 | 6 | 21.6 | 10-12 years |