Ring Sizing Chart

USA UK EU Diameter (mm) Circumference (mm)
4 I 48/49 14.8 46.5
5 J 50/51 15.6 49
6 M 52/53 16.4 52
7 O 54/55 17.3 54.5
8 Q 56/57 18.1 57
9 S 58/59 18.9 59.5
10 T 60/61 19.7 62