US UK EUR Heel to toe(cm)
6 3.5 36 23
6.5 4 36⅔ 23.5
7 4.5 37⅓ 24
7.5 5 38 24.5
8 5.5 38⅔ 25
8.5 6 39⅓ 25.5
9 6.5 40 25.75
9.5 7 40⅔ 26.25
10 7.5 41⅓ 26.5
10.5 8 42 27
11 8.5 42⅔ 27.5