UK size Foot Length (inch) Foot Length (cm) Shoe inner Length (inch) Shoe inner Length (cm) EU size 3 8.85 22.5 9.20 23.4 36 4 9.18 23.3 9.54 24.2 37 5 9.52 24.2 9.87 25.1 38 6 9.85 25.0 10.20 25.9 39 7 10.18 25.9 10.54 26.8 40 8 10.35 26.3 10.70 27.2 41 9 10.68 27.1 11.04 28.0 42