Body Jewelry Gauge/Length Inch to Millimeter Conversion Charts

Body jewelry can be measured in both inches and millimeters. The charts below show the various gauges and lengths in both inches and millimeters.
Gauge Inches Millimeters
0000 .460 11.684
000 .410 10.404
00 .365 9.266
0 .325 8.26
2 .257 6.54
4 .204 5.19
6 .162 4.12
8 .128 3.26
10 .102 2.59
12 .081 2.05
14 .064 1.63
16 .051 1.29
18 .040 1.02
20 .032 .812

Inches Decimal inches Millimeters
1/8" (shortest) .125 3.2
3/16" .1875 4.8
1/4" .250 6.4
5/16" .3125 7.94
3/8" .375 9.5
7/16" .4375 11.11
1/2" .500 12.7
9/16" .5625 14.29
5/8" .625 15.9
11/16" .6875 17.46
3/4" .750 19.0
13/16" .8125 20.64
7/8" .875 22.2
15/16" .9375 23.81
1" 1.000 25.4
1-1/4" 1.25 31.75
1-5/16" 1.3125 33.34
1-3/8" 1.375 34.93
1-7/16" 1.4375 36.51
1-1/2" 1.5 38.1
1-9/16" 1.5625 39.69
1-5/8" 1.625 41.28
1-11/16" 1.6875 42.86
1-3/4" 1.75 44.45
1-13/16" 1.8125 46.04
1-7/8" 1.875 47.63
1-15/16" 1.9375 49.21
2" (longest) 2 50.8