> Piercing Gauge Conversion Chart
|
Gauge
|
Inches (decimal)
|
Inches (fractional)
|
Millimeters
|
|
20
|
.032
|
approx. 1/32″
|
.812
|
|
18
|
.040
|
> 1/32″
|
1.024
|
|
16
|
.051
|
< 1/16″
|
1.291
|
|
14
|
.064
|
approx. 1/16″
|
1.628
|
|
12
|
.081
|
> 1/16″
|
2.053
|
|
10
|
.102
|
< 1/8″
|
2.588
|
|
8
|
.128
|
approx. 1/8″
|
3.264
|
|
6
|
.162
|
> 1/8″
|
4.115
|
|
4
|
.204
|
< 1/4″
|
5.189
|
|
2
|
.258
|
approx 1/4″
|
6.544
|
|
0
|
.325
|
5/16″
|
8.251
|
|
00
|
.365
|
approx. 3/8″
|
9.266
|
|
000
|
.410
|
7/16″
|
11.110
|
|
0000
|
.500
|
1/2″
|
12.710
|
|
9/16″
|
.563
|
9/16″
|
14.287
|
|
5/8″
|
.630
|
5/8″
|
15.875
|
|
3/4″
|
.750
|
3/4″
|
19.050
|
|
7/8″
|
.875
|
7/8″
|
22.225
|
|
1″
|
1.000
|
1″
|
25.400
|
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