How to convert AWG to mm:

Wire diameter calculation

The n gauge wire diameter dn in millimetres (mm) is equal to 0.127mm times 92 raised to the power of 36 minus gauge number n, divided by 39:

dn (mm) = 0.127 mm × 92(36-n)/39

0.127mm is the diameter of gauge #36.

Wire cross-sectional area calculation

The n gauge wire’s cross-sectional area An in square millimetres (mm2) is equal to pi divided by 4 times the square wire diameter d in millimetres (mm):

An (mm2) = (π/4)×dn2 = 0.012668 mm2 × 92(36-n)/19.5

 

AWG Diameter Area
(in) (mm) (mm2)
0000 (4/0) 0.4600 11.684 107
000 (3/0) 0.4096 10.405 85.0
00 (2/0) 0.3648 9.266 67.4
0 (1/0) 0.3249 8.251 53.5
1 0.2893 7.348 42.4
2 0.2576 6.544 33.6
3 0.2294 5.827 26.7
4 0.2043 5.189 21.2
5 0.1819 4.621 16.8
6 0.1620 4.115 13.3
7 0.1443 3.665 10.5
8 0.1285 3.264 8.37
9 0.1144 2.906 6.63
10 0.1019 2.588 5.26
11 0.0907 2.305 4.17
12 0.0808 2.053 3.31
13 0.0720 1.828 2.62
14 0.0641 1.628 2.08
15 0.0571 1.450 1.65
16 0.0508 1.291 1.31
17 0.0453 1.150 1.04
18 0.0403 1.024 0.823
19 0.0359 0.912 0.653
20 0.0320 0.812 0.518
21 0.0285 0.723 0.410
22 0.0253 0.644 0.326
23 0.0226 0.573 0.258
24 0.0201 0.511 0.205
25 0.0179 0.455 0.162
26 0.0159 0.405 0.129
27 0.0142 0.361 0.102
28 0.0126 0.321 0.0810
29 0.0113 0.286 0.0642
30 0.0100 0.255 0.0509
31 0.00893 0.227 0.0404
32 0.00795 0.202 0.0320
33 0.00708 0.180 0.0254
34 0.00630 0.160 0.0201
35 0.00561 0.143 0.0160
36 0.00500 0.127 0.0127
37 0.00445 0.113 0.0100
38 0.00397 0.101 0.00797
39 0.00353 0.0897 0.00632
40 0.00314 0.0799 0.00501