Wire Size Conversion Chart

Conversions for common wire sizes.

Wire Gauge
Inches
Millimetres
14
0.064
1.63
15
0.057
1.45
16
0.051
1.29
17
0.045
1.15
18
0.040
1.02
19
0.036
0.91
20
0.032
0.81
21
0.029
0.72
22
0.025
0.64
23
0.023
0.57
24
0.020
0.51
25
0.018
0.45
26
0.016
0.40
27
0.014
0.36
28
0.013
0.32
29
0.011
0.29
30
0.010
0.25
31
0.009
0.23
32
0.008
0.20
 
Millimetres Inches
0.2
0.008
0.3
0.012
0.4
0.016
0.5
0.020
0.8
0.032
1.0
0.039
1.2
0.047
1.5
0.059
1.6
0.032
1.8
0.071
2.0
0.079

 

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