Ring Size Converter

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

Convert your ring size online now.


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