Gauges Conversion Chart

Gauge Sizes

There are two main systems of measuring body jewelry sizes:
  1. Gauge (“ga" or just “g") - We use "g"
  2. Millimeter (“mm")
In the United States, the gauge system is much more common than millimeter measurements. Here’s how it works.

Gauge Size Chart

Ear Gauge to MM Conversion Table

Gauge Millimeters(mm) Inches
18g 1.0 mm 5/128"
16g 1.2 mm 3/64"
14g 1.6 mm 1/16"
12g 2 mm 5/64"
10g 2.4 mm 3/32"
8g 3.2 mm 1/8"
6g 4 mm 5/32"
4g 5 mm 3/16"
2g 6 mm 1/4"
0g 8 mm 1/3"
00g 10 mm 3/8"
11 mm 7/16"
12 mm 1/2"
14 mm 9/16"
16 mm 5/8"
19 mm 3/4"
22 mm 7/8"
25 mm 1"
29 mm 1 1/8"
32 mm 1 1/4"
35 mm 1 3/8"
38 mm 1 1/2"
41 mm 1 5/8"
44 mm 1 3/4"
48 mm 1 7/8"
51 mm 2"