American Wire Gauge

A numbering system for standard wire diameters, often abbreviated as AWG.

The AWG copper wire gauge is a logarithmic scale base on a wire's cross section, each 3-gauge step in size corresponding to either a doubling or halving of the area.

In general a wire size gauge number corresponds to the number of operations involved in drawing a wire, a larger figure representing more operations resulting in a smaller diameter.

AWGDiameter InchesDiameter mm
00000.460011.684000
0000.409610.403840
000.36489.265920
00.32498.252460
10.28937.348220
20.25766.543040
30.22945.826760
40.20435.189220
50.18194.620260
60.16204.114800
70.14433.665220
80.12853.263900
90.11442.905760
100.10192.588260
110.090742.304796
120.080812.052574
130.071961.827784
140.064081.627632
150.057071.449578
160.050821.290828
170.045261.149604
180.040301.023620
190.035890.911606
200.031960.811784
210.028460.722884
220.025350.643890
230.022570.573278
240.020100.510540
250.017900.454660
260.015940.404876
270.014200.360680
280.012640.321056
290.011260.286004
300.010030.254762
310.0089280.2267712
320.0079500.2019300
330.0070800.1798320
340.0063050.1601470
350.0056150.1426210
360.0050000.1270000
370.0044530.1131062
380.0039650.1007110
390.0035310.0896874
400.0031450.0798830

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Subjects: Mechanical Engineering