Centimeters US Womens US Mens U.K. European
23 4   2 34.5
23.5 4.5   2.5 35
24 5   3 35.5
24.5 5.5   3.5 36
25 6   4 36.5
25.5 6.5   4.5 37
26 7   5 37.5
26.5 7.5   5.5 38.5
27 8 6 6 39
27.5 8.5 6.5 6.5 39.5
28 9 7 7 40
28.5 9.5 7.5 7.5 40.5
29 10 8 8 41
29.5 10.5 8.5 8.5 41.5
30 11 9 9 42.5
30.5 11.5 9.5 9.5 43
31 12 10 10 43.5
31.5 12.5 10.5 10.5 44
32 13 11 11 45
32.5 13.5 11.5 11.5 46
33 14 12 12 46.5
33.5 14.5 12.5 12.5  
34 15 13 13  
34.5   13.5 13.5  
35   14 14  
35.5   14.5 14.5  
36   15 15