*These charts are for reference only. Fit may vary depending on the construction, materials and manufacturer.
| US |
Inches |
CM |
| Infant?US?2 |
3?7/8 |
10 |
| Infant?US?2.5 |
4?1/4 |
10.7 |
| Toddler?US?3.5 |
4?3/4 |
11.9 |
| Toddler?US?5 |
5?1/4 |
13.2 |
| Toddler?US?6 |
5?3/8 |
13.8 |
| Toddler?US?7 |
5?7/8 |
14.8 |
| Toddler?US?8 |
6?1/8 |
15.7 |
| Little?kid?US?9.5 |
6?3/4 |
17 |
| Little?kid?US?10.5 |
6?7/8 |
17.6 |
| Little?kid?US?12 |
7?1/2 |
18.9 |
| Little?kid?US?13 |
7?3/4 |
19.9 |
| Little?kid?US?13.5 |
8?1/4 |
20.8 |
| Big?kid?US?1.5 |
8?1/2 |
21.5 |
| Big?kid?US??2.5 |
8?7/8 |
22.4 |
