US 5.5 = UK 5 = EURO 38, US 6 = UK 5.5 = EURO 38.5, US 6.5 = UK 6 = EURO 39, US 7 = UK 6 = EURO 40, US 7.5 = UK 6.5 = EURO 40.5, US 8 = UK 7 = EURO 41, US 8.5 = UK 7.5 = EURO 42, US 9 = UK 8 = EURO 42.5, US 9.5 = UK 8.5 = EURO 43, US 10 = UK 9 = EURO 44