Ring Sizes Chart

Size(inches) Size(mm) Diameter(mm) Australian size British size French size German size Italian Size Japanese size Swiss size USA size
1 7/8 48 15.27 I 1/2 I 1/2 - 15.25 8 8 - 4 1/2
1 15/16 49 15.7 J 1/2 J 1/2 - 15.75 9.5 9 - 5
2 51 16.1 L L 51 3/4 16 10.5 11 11.75 5 1/2
2 1/16 52 16.51 M M 52 3/4 16.5 11.5 12 12.75 6
2 1/8 53 16.92 N N 54 17 13 13 14 6 1/2
2 3/16 55 17.35 O O 55 1/4 17.25 14.5 14 15.25 7
2 1/4 56 17.75 P P 56 1/2 17.75 16 15 16 1/2 7 1/2
2 5/16 57 18.19 Q Q 57 3/4 18 17 16 17.75 8
2 3/8 58 18.53 Q 1/2 Q 1/2 58 18.5 18.5 17 - 8 1/2
2 7/16 59 18.89 R 1/2 R 1/2 59 1/4 19 19.5 18 - 9
2 1/2 61 19.41 S 1/2 S 1/2 60 1/2 19.5 21 19 - 9 1/2
2 9/16 62 19.84 T 1/2 T 1/2 61 3/4 20 22 20 - 10
2 5/8 63 20.2 U 1/2 U 1/2 62 3/4 20.25 23.5 22 - 10 1/2
2 11/16 65 20.68 V 1/2 V 1/2 64 1/4 20.75 25 23 - 11
2 3/4 66 21.08 W 1/2 W 1/2 66 21 26.5 24 - 11 1/2
2 13/16 68 21.49 Y Y 67 1/2 21.25 27.5 25 27.5 12
2 7/8 69 21.89 Z Z 68 3/4 21.75 28.5 26 28.75 12 1/2
2 15/16 70 22.33 - - - 22 30 27 - 13