International Ring Size Chart 2020

International Ring Size Chart

 

Circumference (mm) Diameter (mm) United States & Canada (mm) UK, Europe &
Australia (mm)
Switzerland (mm)
44.2 14.1 3 F 4
44.8 14.3 F 1/2 5.25
45.5 14.5 3.5 G  
46.1 14.7   G 1/2 6.5
46.8 14.9 4 H  
47.4 15.1   H 1/2 7.75
48 15.3 4.5 I  
48.7 15.5   J 9
49.3 15.7 5 J 1/2  
50 15.9   K 10
50.6 16.1 5.5 K 1/2  
51.2 16.3   L 11.75
51.9 16.5 6 L 1/2 12.75
52.5 16.7   M  
53.1 16.9 6.5 M 1/2 14
53.8 17.1   N  
54.4 17.3 7 N 1/2 15.25
55.1 17.5   O  
55.7 17.7 7.5 O 1/2 16.5
56.3 17.9   P  
57 18.1 8 P 1/2 17.75
57.2 18.2      
57.6 18.3   Q  
58.3 18.5 8.5 Q 1/2  
58.9 18.8   R 19
59.5 19 9 R 1/2  
60.2 19.2   S 20.25
60.8 19.4 9.5 S 1/2  
61.4 19.6   T 21.5
62.1 19.8 10 T 1/2  
62.7 20   U  
63.4 20.2 10.5 U 1/2 22.75
64 20.4   V  
64.6 20.6 11 V 1/2  
65.3 20.8   W 25
65.9 21 11.5 W 1/2  
66.6 21.2   X  
67.2 21.4 12 X 1/2 27.5
67.8 21.6   Y  
68.5 21.8 12.5 Z 28.75
69.1 22   Z 1/2  
69.7 22.2 13    
70.4 22.4   Z + 1  
71 22.6 13.5    
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