Below are the Nike kids shoe size conversion charts for infants, toddlers, little kids and big kids which you can use to convert your kids’ shoe size from US to UK, and Europe in inches and cm.
Infant & Toddler Sizes US UK EU (Inches) (cm) 0C 0 15 3 3/16 8.3 1C 0.5 16 3 9/16 9.1 2C 1.5 17 3 15/16 10 3C 2.5 18.5 4 4/16 10.8 4C 3.5 19.5 4 9/16 11.6 5C 4.5 21 4 15/16 12.5 6C 5.5 22 5 4/16 13.3 7C 6.5 23.5 5 9/16 14.2 8C 7.5 25 5 15/16 15 9C 8.5 26 6 4/16 15.9 10C 9.5 27 6 9/16 16.7
Little Kids (Preschool) US UK EU (Inches) (Centimeters )10.5C 10 27.5 6 12/16 17.2 11C 10.5 28 6 15/16 17.6 11.5C 11 28.5 7 1/16 18 12C 11.5 29.5 7 4/16 18.4 12.5C 12 30 7 7/16 18.8 13C 12.5 31 7 9/16 19.3 13.5C 13 31.5 7 12/16 19.7 1Y 13.5 32 7 15/16 20.1 1.5Y 1 33 8 1/16 20.5 2Y 1.5 33.5 8 4/16 20.9 2.5Y 2 34 8 7/16 21.4 3Y 2.5 35 8 9/16 21.8
Big Kids (Grade School) US UK EU (Inches )(Centimeters) 3.5Y 3 35.5 8 12/16 22.2 4Y 3.5 36 8 13/16 22.4 4.5Y 4 37 8 15/16 22.7 5Y 4.5 37.5 9 2/16 23.2 5.5Y 5 38 9 4/16 23.5 6Y 5.5 38.5 9 6/16 23.8 6.5Y 6 39 9 9/16 24.3 7Y 6 40 9 11/16 24.6