US W's Size UK EU JPN (cm) US M's
Conversion
5 2.5 35 22 3.5
5.5 3 35.5 22.5 4
6 3.5 36 23 4.5
6.5 4 37 23.5 5
7 4.5 37.5 24 5.5
7.5 5 38 24.5 6
8 5.5 38.5 25 6.5
8.5 6 39 25.5 7
9 6.5 40 26 7.5
9.5 7 40.5 26.5 8
10 7.5 41 27 8.5
10.5 8 42 27.5 9
11 8.5 42.5 28 9.5
11.5 9 43 28.5 10