Ring Size Guide

Ring Size Guide - Conversion Chart and Circumferences

Measure IT US size ISO measurement Inner Circumference (mm)
6 3.5 46 46
7 4 47 47
8 4.5 48 48
9 5 49 49
10 5 50 50
11 5.5 51 51
12 6 52 52
13 6 53 53
14 6.5 54 54
15 7 55 55
16 7.5 56 56
17 8 57 57
18 8.5 58 58
19 8.5 59 59
20 9 60 60
21 9 61 61
22 9.5 62 62
23 10 63 63
24 10 64 64
25 10.5 65 65
26 11 66 66
27 11.5 67 67
28 12 68 68
29 12.5 69 69
30 13 70 70