Size Chart

US Sizes Euro Sizes Inches CM Average Age of Child Use
0 15 3.125" 7.9 newborn to 6 months infant/baby
1 16 3.5" 8.9 newborn to 6 months infant/baby
1.5 17 3.625" 9.2 newborn to 6 months infant/baby
2 17 3.75" 9.5 newborn to 6 months infant/baby
2.5 18 4" 10.2 6 to 12 months infant/baby
3 18 4.125" 10.5 6 to 12 months infant/baby
3.5 19 4.25" 10.8 6 to 12 months infant/baby
4 19 4.5" 11.4 6 to 12 months infant/baby
4.5 20 4.625" 11.7 12 to 18 months baby/toddler
5 20 4.75" 12.1 12 to 18 months baby/toddler
5.5 21 5" 12.7 12 to 18 months baby/toddler
6 22 5.125" 13 12 to 18 months baby/toddler
6.5 22 5.25" 13.3 12 to 18 months baby/toddler
7 23 5.5" 14 18 to 24 months baby/toddler
7.5 23 5.625" 14.3 18 to 24 months baby/toddler
8 24 5.75" 14.6 18 to 24 months baby/toddler
8.5 25 6" 15.2 24 months plus toddler/little kid
9 25 6.125" 15.6 24 months plus toddler/little kid
9.5 26 6.25" 15.9 24 months plus toddler/little kid
10 27 6.5" 16.5 24 months plus big kids