Ear Gauges Size Conversion Chart
The ear gauges size conversion chart for gauging or piercing includes a list of the industry standard body piercing jewelry sizes in gauge, inch, and millimeter with approximate conversions(rounded up or down) where most commonly utilized:

Ear Gauge Plugs - Size Conversion Chart

Gauge___Inch___Millimeter
20G______________0.8mm
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______1/4______6.0mm
0G______5/16_____8.0mm
00G_____3/8______10.0mm
000G____7/16_____11.0mm
0000G___1/2______12.0mm
________9/16_____14.0mm
________5/8______16.0mm
________11/16____18.0mm
________3/4______19.0mm
________13/16____20.0mm
________7/8______22.0mm
________15/16____24.0mm
________1________25.0mm
________1 1/8____29.0mm
________1 1/4____32.0mm
________1 3/8____35.0mm
________1 1/2____38.0mm
________1 5/8____41.0mm
________1 3/4____44.0mm
________1 7/8____48.0mm
________2_______50.0mm


Conversions for ball/spike sizes

Inch_______Millimeter
1/8___________3.0mm
5/32__________4.0mm
3/16__________5.0mm
1/4___________6.0mm
5/16__________8.0mm
3/8___________10.0mm
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