Ring Size

Ring Size

Finger circumference (in mm) Diameter of ring (in mm) Uk Europe Usa Japan
44.2 14.1 F½ 44 3 4
44.8 14.3 G 45 5
45.5 14.5 G ½ 3½
46.1 14.7 H 46 6
46.8 14.9 H½ 47 4 7
47.4 15.1 I
48 15.3 I½ 48 4½ 8
48.7 15.5 J
49.3 15.7 J½ 49 5 9
50 15.9 K 50
50.6 16.1 K½ 5½ 10
51.2 16.3 L 51
51.9 16.5 L½ 52 6 11
52.5 16.7 M 12
53.1 16.9 M½ 53 6½ 13
53.8 17.1 N
54.4 17.3 N½ 54 7 14
55.1 17.5 O 55
55.7 17.7 O½ 7½ 15
56.3 17.9 P 56
57 18.1 P½ 57 8 16
57.2 18.2
57.6 18.3 Q
58.3 18.5 Q½ 58 8½ 17
58.9 18.8 R 59
59.5 19 R½ 9 18
60.2 19.2 S 60
60.8 19.4 S½ 61 9½ 19
61.4 19.6 T
62.1 19.8 T½ 62 10 20
62.7 20 U 21
63.4 20.2 U½ 63 10½ 22
64 20.4 V 64
64.6 20.6 V½ 11 23
65.3 20.8 W 65
65.9 21 W½ 66 11½ 24
66.6 21.2 X
67.2 21.4 X½ 67 12 25
67.8 21.6 Y
68.5 21.8 Z 68 12½ 26
69.1 22 Z½ 69
69.7 22.2 70 13 27
70.4 22.4 Z+1 71
71 22.6 Z+2 13½

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