INTERNATIONAL RING SIZE CHART

INTERNATIONAL RING SIZE CHART
USA & Canada Australia, UK & Europe ASIA
(Hong Kong,China, Singapore,
Taiwan, Japan & Macau)
Circumference Diameter
mm inch mm inch
4 7 45 1.77 14 0.55
8 46.5 1.83 14.8 0.57
5 J ½ 9 49 1.93 15.6 0.61
6 M 12 52 2.05 16.4 0.65
7 O 14 54.5 2.15 17.3 0.68
8 Q 16 57 2.24 18.1 0.71
8½ 17 58.3 2.3 18.5 0.73
9 S 18 59.5 2.34 18.9 0.74
9½ S ½ 19 60.8 2.39 19.3 0.76
10 T ½ 20 62 2.44 19.7 0.78
10¼ U 21 62.7 2.47 20 0.79
10½ 22 63.4 2.5 20.17 0.79
11 V ½ 23 64.5 2.54 20.6 0.81
12 Y 25 67.5 2.66