Ring Size Guide

Circumference (mm) Diameter (mm) UK / Europe / Australia USA / Canada China SG / JP HK Switzerland
44.2 14.1 F½ 3 6 4 6 4
44.8 14.3 G 5 5¼ 5¼
45.5 14.5 G½ 3½ 7 7.5 7.5 5¼
46.1 14.7 H 4 8 6 6½ 6½
46.8 14.9 H½ 4 8 7 9
47.4 15.1 I 4½ 9 7¾ 7¾
48.0 15.3 I½ 4½ 10 8 10
48.7 15.5 J 5 10 9 11 9
49.3 15.7 J½ 5 10 10 11 10
50.0 15.9 K 5½ 11 10 12 10
50.6 16.1 K½ 5½ 11 11 12 12
51.2 16.3 L 6 12 11 13 11¾
51.9 16.5 L½ 6 12 12 13 12¾
52.5 16.7 M 6½ 13 12 --- ---
53.1 16.9 M½ 6½ 13 13 14.5 14
53.8 17.1 N 7 14 --- --- ---
54.4 17.3 N½ 7 14 14 16 15¼
55.1 17.5 O 7½ 15 15 --- ---
55.7 17.7 O½ 7½ 15 15 17 16½
57.2 18.2 P 8 15 --- 18 ---
57.6 18.3 Q 8 16 --- --- ---
58.3 18.5 Q½ 8½ 18 17 19 ---
58.9 18.8 R 9 19 --- 19 ---
60.2 19.2 S 9½ 20 --- 20 20¼
60.8 19.4 S½ 9½ 19 22 --- ---
61.4 19.6 T 10 21 --- 21½ 21½
62.1 19.8 T½ 10 20 23 --- ---
62.7 20.0 U 11 22 21 --- ---
63.4 20.2 U½ 10½ 22 24 22¾ 22¾
64.0 20.4 V 11 23 --- --- ---
64.6 20.6 V½ 11 23 25 --- ---
65.3 20.8 W 11½ 24 25 25 25
65.9 21.0 W½ 11½ 25 24 26 26
66.6 21.2 X 12 26 --- --- ---
67.2 21.4 X½ 12 26 25 27.75 27½
67.8 21.6 Y 13 27 --- --- ---
68.5 21.8 Z 12½ 26 --- 28¾ 28¾
69.1 22.0 Z½ 13 27 --- --- ---
69.7 22.2 Z+1 13 27 30 --- ---
70.4 22.4 Z+2 13½ --- --- --- ---
71.0 22.6 Z+3 14 --- --- --- ---