Ring Size Guide

USA CIRCUMFERENCE DIAMETER
in mm in mm
5 1.94 49.3 0.618 15.7
5.5 1.99 50.6 0.634 16.1
6 2.04 51.9 0.65 16.51
6.5 2.09 53.1 0.666 16.92
7 2.14 54.4 0.682 17.32
7.5 2.19 55.7 0.698 17.73
8 2.24 57 0.714 18.14
8.5 2.29 58.3 0.73 18.54
9 2.34 59.5 0.746 18.95
9.5 2.39 60.8 0.762 19.4
10 2.44 62.1 0.778 19.76
10.5 2.49 63.4 0.794 20.17
11 2.54 64.6 0.81 20.57
11.5 2.59 65.9 0.826 20.98
12 2.65 67.2 0.842 21.39
12.5 2.68 68 0.862 21.92
13 2.74 69.7 0.877 22.3
13.5 2.81 71 0.892 22.68
14 2.89 72.3 0.905 23