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The acredo Ring Size Chart

Our conversion table saves you converting the inner diameter to inner circumference.

You can read the values directly.

Ring size in Germany
(Volume)

Inner diameter
(mm)

Ring size USA/Canada
(US ring size)

Ring size Great Britain
(UK ring size)

Ring size France
(taille de bague)

Ring size Japan

40 12,7 1.4 (1) C 0,0 0,2
41 13,0 1.8 (1-) C 1/2 1,0 1,1
42 13,4 2.2 (2) D 1/2 2,0 2,1
43 13,7 2.6 (2-) E 1/2 3,0 3,1
44 14,0 3.0 (2-) F 4,0 4,0
45 14,3 3.4 (3) G 5,0 5,0
46 14,6 3.7 (3-) G 1/2 6,0 5,9
47 15,0 4.1 (4) H 1/2 7,0 6,9
48 15,3 4.5 (4-) I 1/2 8,0 7,8
49 15,6 4.9 (4-) J 9,0 8,8
50 15,9 5.3 (5) K 10 9,7
51 16,2 5.7 (5-) K 1/2 11 10,7
52 16,6 6.1 (6) L 1/2 12 11,6
53 16,9 6.4 (6) M 1/2 13 12,6
54 17,2 6.8 (6-) N 14 13,6
55 17,5 7.2 (7) O 15 14,5
56 17,8 7.6 (7-) P 16 15,5
57 18,1 8.0 (7-) P 1/2 17 16,4
58 18,5 8.4 (8) Q 1/2 18 17,4
59 18,8 8.7 (8-) R 19 18,3
60 19,1 9.1 (9) S 20 19,3
61 19,4 9.5 (9-) T 21 20,2
62 19,7 9.9 (9-) T 1/2 22 21,2
63 20,1 10.3 (10) U 1/2 23 22,2
64 20,4 10.7 (10-) V 24 23,1
65 20,7 11.0 (11) W 25 24,1
66 21,0 11.4 (11) X 26 25,0
67 21,3 11.8 (11-) X 1/2 27 26,0
68 21,6 12.2 (12) Y 1/2 28 26,9
69 22,0 12.6 (12-) Z 1/2 29 27,9
70 22,3 13.0 (12-) Z +1 30 28,8

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