Ring Size Chart

 Ring Size

Circumference

Diameter 
USA (inch) (mm) (mm)
 3 1.74 44.2 14.10
3.5 1.79 45.5 14.48
4 1.84 46.8 14.88
4.5 1.89 48 15.30
5 1.94 49 15.70
5.5 1.99 51 16.10
6 2.04 52 16.51
6.5 2.09 53 16.92
7 2.14 55 17.35
7.5 2.19 56 17.75
8 2.24 57 18.19
8.5 2.29 58 18.53
9 2.34 59 18.89
9.5 2.39 61 19.41
10 2.44 62 19.84
10.5 2.49 63 20.20
11 2.56 65 20.68
11.5 2.59 66 21.08
12 2.65 68 21.49
12.5 2.69 69 21.89
13 2.74 70 22.33
13.5 2.79 71 22.60
14 2.85 72 22.69