We recommend choosing the bigger size for 1/2 sizes and an additional size for wider feet.

Europe UK USA woman USA men Japan Cm Inches
35 2.5 5.5 4 21.5 22.8 9
36 3.5 6.5 5 22.5 23.5 9.25
37 4 7.5 6 23 23.8 9.38
38 5 8 6.5 24  24.5 9.63
39 6 9 7.5 25 25.1 9.88
40 6.5 9.5 8 25.5 25.4 10
41 7 10 8.5 28 25.7 10.13
42 7.5 11 9 26.5 26 10.25
43 8.5 12 10.5 27.5 26.7 10.5
44 9.5 13 11.5 28.5 27.3 10.75
45 10.5 14 12.5 29.5 27.9 11