New Balance size chart

EU	cm (foot length)	US (mens)
36	22	4
37	22.5	4.5
37.5	23	5
38	23.5	5.5
38.5	24	6
39.5	24.5	6.5
40	25	7
40.5	25.5	7.5
41.5	26	8
42	26.5	8.5
42.5	27	9
43	27.5	9.5
44	28	10
44.5	28.5	10.5
45	29	11
45.5	29.5	11.5
46.5	30	12
47	30.5	12.5
47.5	31	13
49	32	14