Gauge To Millimeter Conversion Chart

We receive a lot of emails asking what size people should gauge to next when gauging their piercings. We also recieve a lot of emails from our U.K., Australian, Canadian and other international customers asking what the gauge to millimeter conversion is for our jewelry. We decided to make an easy to read chart to clarify these questions. The gauges are listed from smallest diameter to largest with standard gauges in the left column and the millimeter conversion for the corresponding gauges in the right column.


Here is the chart:

Gauge Millimeters
18G 1.0mm
16G 1.2mm
14G 1.6mm
12G 2.0mm
10G 2.5mm
8G 3.0mm
6G 4.0mm
4G 5.0mm
2G 6.0mm
0G 8.0mm
00G 10.0mm
7/16″ 11.0mm
1/2″ 12.0mm
9/16″ 14.0mm
5/8″ 16.0mm
3/4″ 19.0mm
7/8″ 22.0mm
1″ 25.0mm

One Response to “Gauge To Millimeter Conversion Chart”

  1. Patrizia Hall Says:

    I typically wear 18 ga nose screws or retainers. I am finding it difficult to find 14k gold nose screws online that I don’t have to either 1) stretch the curved part out farther in order to get it into the hole or 2) sand the end down so that it doesn’t scratch when it goes into the whole. Is there anyway to judge these before ordering and being stuck with something I can’t wear or return?

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