AWG (American Wire Gauge) to Metric Conversion Chart
AWG (American Wire Gauge) is used predominantly in North America for wire outside diameter and cross-section. Dimensions are defined by the ASTM B258 standard. AWG sizes with multiple zeros can be designated as number of zeros or number of zeros/0. Both metric wire cross-section and wire outside diameter can be calculated by formulas using just the AWG number. The formula for the wire outside diameter is: 0.127 mm * 92(32-n)/39 [mm]. The formula for metric wire cross-section is: 0.012668 mm2 * 92(36-n)/19.5 [mm2]. In both formulas, n is the AWG number.
AWG Number | Wire outside diameter [inch] | Wire outside diameter [mm] | Wire cross-section [mm2] |
|---|---|---|---|
0000 (4/0) | 0.46 | 11.684 | 107.16 |
000 (3/0) | 0.41 | 10.405 | 84.97 |
00 (2/0) | 0.365 | 9.266 | 67.4 |
0 (1/0) | 0.325 | 8.251 | 53.46 |
1 | 0.289 | 7.348 | 42.409 |
2 | 0.258 | 6.544 | 33.632 |
3 | 0.229 | 5.827 | 26.671 |
4 | 0.204 | 5.189 | 21.151 |
5 | 0.182 | 4.621 | 16.774 |
6 | 0.162 | 4.115 | 13.302 |
7 | 0.144 | 3.665 | 10.549 |
8 | 0.128 | 3.264 | 8.366 |
9 | 0.114 | 2.906 | 6.634 |
10 | 0.102 | 2.588 | 5.261 |
11 | 0.0907 | 2.305 | 4.172 |
12 | 0.0808 | 2.053 | 3.309 |
13 | 0.072 | 1.828 | 2.624 |
14 | 0.0641 | 1.628 | 2.081 |
15 | 0.0571 | 1.45 | 1.65 |
16 | 0.0508 | 1.291 | 1.309 |
17 | 0.0453 | 1.15 | 1.038 |
18 | 0.0403 | 1.024 | 0.823 |
19 | 0.0359 | 0.912 | 0.653 |
20 | 0.032 | 0.812 | 0.518 |
21 | 0.0285 | 0.723 | 0.411 |
22 | 0.0253 | 0.644 | 0.326 |
23 | 0.0226 | 0.573 | 0.258 |
24 | 0.021 | 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 | 0.081 |
29 | 0.0113 | 0.286 | 0.064 |
30 | 0.01 | 0.255 | 0.051 |
31 | 0.00893 | 0.227 | 0.04 |
32 | 0.00795 | 0.202 | 0.032 |
33 | 0.00708 | 0.18 | 0.025 |
34 | 0.00631 | 0.16 | 0.02 |
35 | 0.00562 | 0.143 | 0.016 |
36 | 0.005 | 0.127 | 0.013 |
37 | 0.00445 | 0.113 | 0.01 |
38 | 0.00397 | 0.101 | 0.008 |
39 | 0.00353 | 0.09 | 0.006 |
40 | 0.00314 | 0.08 | 0.005 |