US UK EU
5 3.5 36
5.5 4 36 2/3
6 4.5 37 1/3
6.5 5 38
7 5.5 38 2/3
7.5 6 39 1/3
8 6.5 40
8.5 7 40 2/3
9 7.5 41 1/3
9.5 8 42
10 8.5 42 2/3
10.5 9 43 1/3