Ring Size Guide

Swipe to see full chart →
US / CAN Internal Diameter (mm) UK / AUS German
4 14.9 mm H 1/2 15
4.5 15.3 mm I 1/2 15.25
5 15.7 mm J 1/2 15 3/4
5.5 16.1 mm K 1/2 16
6 16.5 mm L 1/2 16 1/2
6.5 16.9 mm M 1/2 16.75
7 17.3 mm O 17 1/4
7.5 17.7 mm P 17.75
8 18.1 mm Q 18
8.5 18.5 mm R 18.5
9 18.9 mm S 1/2 19
9.5 19.3 mm T 1/2 19.5
10 19.8 mm U 1/2 20
10.5 20.2 mm V 1/2 20.25
11 20.6 mm W 1/2 20.75
11.5 21.0 mm X 1/2 21
12 21.4 mm Y 21.25
12.5 21.8 mm Z 21.75
13 22.2 mm Z+1 22