Size Guide

DIAMETER

(mm)

CIRCUMFERENCE

(mm)

 RING SIZE

(US)
14.2 44.2 3
14.5 45.5 3.5
15 46.8 4
15.4 48 4.5
15.8 49.3 5
16.2 50.6 5.5
16.6 51.9 6
17 53.1 6.5
17.4 55.4 7
17.8 55.7 7.5
18.2 57 8
18.6 58.3 8.5
19 59.5 9
19.4 60.8 9.5
19.8 62.1 10
20.2 63.4 10.5
20.6 64.6 11
21 65.9 11.5
21.4 67.2 12
21.8 67.8 12.5