Camper Size Conversion

US UK EU CM
6 5.5 39 25
7 6 40 25.5
8 7 41 26
9 8 42 26.5
10 9 43 27.5
11 10 44 28.5
12 11 45 29
13 12 46 29.5
14 13 47 30.5
15 14 48
16 15 49
17 16 50
18 17 51