US to Metric

Conditions of Use
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U.S. to Metric Conversion Charts

Gauge Approximation Chart

18 Gauge = 1mm
16 Gauge = 1.2mm
14 Gauge = 1.6mm
12 Gauge = 2mm
10 Gauge = 2.4mm
8 Gauge = 3.2mm
6 Gauge = 4mm
4 Gauge = 5mm
2 Gauge = 6mm
0 Gauge = 8mm
00 Gauge = 10mm

Diameter Approximation Chart

1/4" = 6 or 7mm
5/16" = 8mm
3/8" = 9 or 10mm
7/16" = 11mm
1/2" = 12mm
9/16" = 14mm
5/8" = 16mm
3/4" = 19mm
7/8" = 22mm
1" = 25mm
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