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Wedding Rings and Things - from Will You to I Do

 International Ring Sizes


U.S. & Canada Standard Great Britain  France   Germany   Japan   Switzerland  Diameter in Inches Diameter in Millimeters
000 ... ... ... ... ... .390 9.91
00 ... ... ... ... ... .422 10.72
0 ... ... ... ... ... .454 11.53
1/2 A ... ... ... ... ... ...
1 B ... ... 1 ... .487 12.37
1-1/2 C ... ... ... ... .503 12.78
2 D 41-1/2 13-1/4 2 1-1/2 .52 13.21
2-1/2 E 42-3/4 13-3/4 3 2-3/4 .536 13.61
3 F 44 14 4 4 .553 14.05
... G 45-1/4 ... 5 5-1/4 ... ...
3-1/2 ... ... 14-1/2 ... ... .569 14.45
3-3/4 H 46-1/2 ... 6-1/2 6-1/2 ... ...
4 H-1/2 ... 15 7 ... .585 14.86
4-1/4 I 47-3/4 ... ... 7-3/4 ... ...
4-1/2 I-1/2 ... 15-1/4 8 ... .601 15.27
... J 49 ... ... 9 ... ...
5 J-1/2 ... 15-3/4 9 ... .618 15.70
... K 50 ... ... 10 ... ...
5-1/2 L 51-3/4 16 ... 11-3/4 .634 16.10
... L-1/2 ... ... 11 ... ... ...
6 M 52-3/4 16-1/2 12 12-3/4 .650 16.51
6-1/2 N 54 17 13 14 .666 16.92
7 O 55-1/4 17-1/4 14 15-1/4 .683 17.35
7-1/2 P 56-1/2 17-3/4 15 16-1/2 .699 17.75
8 Q 57-3/4 18 16 17-3/4 .716 18.19
8-1/2 ... ... 18-1/2 17 ... .732 18.59
... R 59 ... ... 19 ... ...
9 ... ... 19 18 ... .748 18.99
... S 60-1/4 ... ... 20-1/4 ... ...
9-1/2 ... ... 19-1/2 19 ... .764 19.41
... T 61-1/2 ... ... 21-1/2 ... ...
10 T-1/2 ... 20 20 ... .781 19.84
10-1/4 U 62-3/4 ... 21 22-3/4 ... ...
10-1/2 U-1/2 ... 20-1/4 22 ... .797 20.24
... V 63-3/4 ... ... 23-3/4 ... ...
11 V-1/2 ... 20-3/4 23 ... .814 20.68
... W 65 ... ... 25 ... ...
11-1/2 ... ... 21 24 ... .830 21.08
... X 66-1/4 ... ... 26-1/4 ... ...
12 Y 67-1/2 21-1/4 25 27-1/2 .846 21.49
12-1/2 Z 68-3/4 21-3/4 26 28-3/4 .862 21.89
13 ... ... 22 27 ... .879 22.33

 



 
 
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Engagement Rings & Things provides international ring sizes just in case a ring size for an out-of-country engagement ring is in order ... for Great Britain, France, Germany, Switzerland or Japan