Size Chart

Gauge Inches Millimetres
20 0.8
18 1
16 1.2
14 1.6
12 2
10 2.4
8 3
6 4
4 5
2 6
0 8
00 10
7/16″ 11
1/2″ 13
9/16″ 14
5/8″ 16
11/16″ 18
3/4″ 19
13/16″ 21
7/8″ 22
15/16″ 24
1″ 25
1 – 1/8″ 28
1 – 3/16″ 30
1 – 1/4″ 32
1 – 3/8″ 35
1 – 1/2″ 38
1 – 9/16″ 40
1 – 5/8″ 41
1 – 3/4″ 44
1 – 13/16″ 46
1 – 7/8″ 48
1 – 15/16″ 50
2″ 51

Body Piercing Conversion Chart

Ring Size Conversion Chart

Inside Circumference Sizes
MM Inches

US & Canada

(We use this size)

U.K, NewZealand
& Australia
China & Japan
46.7 1.84  4 H 1/2 7
47.3 1.86  4.5 I 1/2 8
49.3 1.94 5 J 1/2 9
50.6 1.99  5.5 L 10
51.9 2.04  6 M 12
53.2 2.09  6.5 N 13
54.5 2.15  7 O 14
55.8 2.2  7.5 P 15
57.2 2.25  8 Q 16
58.2 2.29  8.5 Q 1/2 17
59.5 2.35  9 R 1/2 18
61.0 2.40  9.5 S 1/2 19
62.3 2.45  10 T 1/2 20
63.5 2.50  10.5 U 1/2 22
65.0 2.56  11 V 1/2 23
66.2 2.61  11.5 W 1/2 24
67.5 2.66  12 Y 25
68.8 2.71  12.5 Z 26
70.2 2.76  13 Z+1 27
72 2.80  13.5 Z+2 -
73 2.87  14 Z+3 -
74 2.91  14.5 Z+4 -
75 2.95 15  Z+5 -
76 2.87  15.5 Z+6 -
77 2.90  16 Z+7 -

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