Ring Size guide

International Ring Size Conversion Chart

US
CA
GB, AU
NZ, IE
DE
BE
FR CH IT DIA
(mm)
Circ (mm)
Europe / ISO
5 J 1/2 15.75 9.5 15.7 49
5.5 L 16 51.75 11.75 10.5 16.1 51
6 M 16.5 52.75 12.75 11.5 16.51 52
6.5 N 17 54 14 13 16.92 53
7 O 17.25 55.25 15.25 14.5 17.35 55
7.5 P 17.75 56.5 16.5 16 17.75 56
8 Q 18 57.75 17.75 17 18.19 57
8.5 Q 1/2 18.5 58 18.5 18.53 58
9 R 1/2 19 59.25 19 19.5 18.89 59
9.5 S 1/2 19.5 60.5 21 19.41 61
10 T 1/2 20 61.75 20.25 22 19.84 62
10.5 U 1/2 20.25 62.75 22.75 23.5 20.2 63
11 V 1/2 20.75 64.25 25 25 20.68 65
11.5 W 1/2 21 66 26.5 21.08 66
12 Y 21.25 67.5 27.5 27.5 21.49 68
12.5 Z 21.75 68.75 28.75 28.5 21.89 69
13 22 30 22.33 70