UK USA EU 12 13 30 13 1 31 1 2 32.5 1.5 2.5 33 2 2.5 34 2.5 3 35 3 3.5 35.5 3.5 4 36 4 4.5 37 4.5 5 37.5 5 5.5 38 5.5 6 38.5 6 6.5 39 6.5 7 39.5 7 7.5 40 7.5 8 41 8 8.5 42 8.5 9 42.5 9 9.5 43 9.5 10 44 10 10.5 44.5 10.5 11 45 11 11.5 45.5 11.5 12 46 12 13 47 13 13.5 48 14 14.5 49 15 15.5 50 Taglie Calzettoni Size EU US