FITTING: Shoes vary so please compare foot length with insole measurements, allowing 3/8"+ for wiggle room & growth. Larger sizes in Kids' Shoes. Consultations always OK: 
Euro 20/US 4.5 = 5 1/8"
Euro 22/US 6 = 5 5/8"
Euro 23/US 6.5 = 5 7/8"
Euro 30/US 12.5 = 7 5/8"
Euro 31/US 13 = 7 7/8"
Euro 32/US 1 = 8 1/8"
Euro 33/US 2 = 8 3/8"