RING SIZE CHART

"Circumference (mm) Europe / ISO" Diameter (mm) USA / Canada UK / Australia
44.2 14.1 3 F
45.5 14.5 3-1/2 G
46.8 14.9 4 H
48 15.3 4-1/2 I
49.3 15.7 5 J-1/2
50.6 16.1 5-1/2 K-1/2
51.9 16.5 6 L-1/2
53.1 16.9 6-1/2 M-1/2
54.4 17.3 7 N-1/2
55.7 17.7 7-1/2 O-1/2
57 18.1 8 P-1/2
58.3 18.5 8-1/2 Q-1/2
59.5 19 9 R-1/2
60.8 19.4 9-1/2 S-1/2
62.1 19.8 10 T-1/2
63.4 20.2 10-1/2 U-1/2
64.6 20.6 11 V-1/2
65.9 21 11-1/2 W-1/2
67.2 21.4 12 X-1/2
68.5 21.8 12-1/2 Z