Size Chart

Ring Size
US UK Japan Circumference Diameter
      in(") mm in(") mm
5 J - 1/2 9 1.94 49.3 0.62 15.7
6 L-1/2 12 2.04 51.8 0.65 16.5
7 O 14 2.14 54.4 0.68 17.3
8 Q 16 2.24 56.9 0.71 18.1
9 S 18 2.34 59.5 0.75 18.9
10 T-1/2 20 2.44 62.1 0.78 19.8

Body Chain Size
S US 0-2 & bust size 32-34B
M US 2-4
L US 4-8

General Conversion
1" = 2.54 cm
1" = 25.4 mm