Ring Size Converter

The ring size converter tool converts your ring size from cm to mm and vice versa.

You can always use the ring size converter to find your exact ring size.


Ring size converter


Length / Distance Converter
Unit converter for length
Value
From
To



Now use the ring size conversion chart to determine your exact ring size 

Size in MM US & Canada UK Japan France Switzerland Germany
44.1 3 F 4 44 4 14
45.4 3 1/2 G 5 45 1/4 5 1/4 14 1/2
46.7 4 H 1/2 7 46 1/2 6 1/2 15
48.0 4 1/2 I 1/2 8 47 3/4 7 3/4 15 1/2
49.2 5 J 1/2 9 49 9 15 3/4
50.5 5 1/2 K 1/2 10 50 1/4 10 1/4 16 1/4
51.8 6 L 1/2 12 51 1/2 11 1/2 16 1/2
53.1 6 1/2 M 1/2 13 52 3/4 12 3/4 17
54.3 7 O 14 54 14 17 1/4
55.6 7 1/2 P 15 55 1/4 15 1/4 17 3/4
56.9 8 Q 16 56 1/2 16 1/2 18
58.2 8 1/2 R 17 57 3/4 17 3/4 18 1/2
59.4 9 S 18 59 19 19
60.7 9 1/2 19 60 1/4 20 1/4 19 1/2
62.0 10 T 1/2 20 61 1/2 21 1/2 20
63.3 10 1/2 U 1/2 22 62 3/4 22 3/4 20 1/2
64.5 11 V 1/2 23 64 24 20 3/4
65.8 11 1/2 W 1/2 24 65 1/4 25 1/4 21
67.1 12 Y 25 66 1/2 26 1/2 21 1/4
68.3 12 1/2 Z 26 67 3/4 27 3/4 21 3/4
69.6 13 27 69 29 22