Ring Size Guide

This is a chart that will be extremely helpful for you to determine the ring size that you need. You can either make use of a tape or a small piece of string to measure the area that will be occupied by the ring. When it becomes a complete circle, make a mark on such string. This will be helpful for you to compare with the chart that is mentioned below.

No. Inside Diameter Inside Circumference SIZE
MM MM US / Canada UK / Australia France / Germany Spain Japan
1 14.1 44.2 3 F 44 4.5 4
2 14.5 45.5 3.5 G 46 5.5 5
3 14.9 46.8 4 H 47 7 7
4 15.3 48 4.5 I 48 8 8
5 15.7 49.3 5 J-½ 49 9.5 9
6 16.1 50.6 5.5 K-½ 51 10.5 10
7 16.5 51.9 6 L-½ 52 12 11
8 16.9 53.1 6.5 M-½ 53 13 13
9 17.3 54.4 7 N-½ 54 14.5 14
10 17.7 55.7 7.5 O-½ 56 16 15
11 18.1 57 8 P-½ 57 17 16
12 18.5 58.3 8.5 Q-½ 58 18.5 17
13 19 59.5 9 R-½ 59 19.5 18
14 19.4 60.8 9.5 S-½ 61 21 20
15 19.8 62.1 10 T-½ 62 22 21
16 20.2 63.4 10.5 U-½ 63 23.5 22
17 20.6 64.6 11 V-½ 64 24.5 23
18 21 65.9 11.5 W-½ 66 26 25
19 21.4 67.2 12 X-½ 67 27.5 26
20 21.8 68.5 12.5 Z 68 28.5 28