AWG Wire Sizes

The American wire gauge (AWG), also known as the Brown & Sharpe wire gauge, is a standardized system for defining the diameter of conductive wires. The table below is a guide only and there are many factors such as alloy composition, ambient temperature and airflow which come into play.

Guage	Diameter	Diameter	Resistance per 1000 ft	Resistance per 1000 m	Max Current (in air)	Max Current (in jacket)
0000	0.4600"	11.6840 mm	0.05 Ω	0.16 Ω	380 A	302 A
000	0.4096"	10.4038 mm	0.06 Ω	0.20 Ω	328 A	239 A
00	0.3648"	9.2659 mm	0.08 Ω	0.26 Ω	283 A	190 A
0	0.3249"	8.2525 mm	0.10 Ω	0.32 Ω	245 A	150 A
1	0.2893"	7.3482 mm	0.12 Ω	0.41 Ω	211 A	119 A
2	0.2576"	6.5430 mm	0.16 Ω	0.51 Ω	181 A	94 A
3	0.2294"	5.8268 mm	0.20 Ω	0.65 Ω	158 A	75 A
4	0.2043"	5.1892 mm	0.25 Ω	0.82 Ω	135 A	60 A
5	0.1819"	4.6203 mm	0.31 Ω	1.03 Ω	118 A	47 A
6	0.1620"	4.1148 mm	0.40 Ω	1.30 Ω	101 A	37 A
7	0.1443"	3.6652 mm	0.50 Ω	1.63 Ω	89 A	30 A
8	0.1285"	3.2639 mm	0.63 Ω	2.06 Ω	73 A	24 A
9	0.1144"	2.9058 mm	0.79 Ω	2.60 Ω	64 A	19 A
10	0.1019"	2.5883 mm	1.00 Ω	3.28 Ω	55 A	15 A
11	0.0907"	2.3038 mm	1.26 Ω	4.13 Ω	47 A	12 A
12	0.0808"	2.0523 mm	1.59 Ω	5.21 Ω	41 A	9.3 A
13	0.0720"	1.8288 mm	2.00 Ω	6.57 Ω	35 A	7.4 A
14	0.0641"	1.6281 mm	2.53 Ω	8.28 Ω	32 A	5.9 A
15	0.0571"	1.4503 mm	3.18 Ω	10.44 Ω	28 A	4.7 A
16	0.0508"	1.2903 mm	4.02 Ω	13.17 Ω	22 A	3.7 A
17	0.0453"	1.1506 mm	5.06 Ω	16.61 Ω	19 A	2.9 A
18	0.0403"	1.0236 mm	6.39 Ω	20.94 Ω	16 A	2.3 A
19	0.0359"	0.9119 mm	8.05 Ω	26.41 Ω	14 A	1.8 A
20	0.0320"	0.8128 mm	10.15 Ω	33.29 Ω	11 A	1.5 A
21	0.0285"	0.7239 mm	12.80 Ω	41.98 Ω	9 A	1.2 A
22	0.0254"	0.6452 mm	16.14 Ω	52.94 Ω	7 A	0.92 A
23	0.0226"	0.5740 mm	20.36 Ω	66.78 Ω	4.7 A	0.729 A
24	0.0201"	0.5105 mm	25.67 Ω	84.20 Ω	3.5 A	0.577 A
25	0.0179"	0.4547 mm	32.37 Ω	106.17 Ω	2.7 A	0.457 A
26	0.0159"	0.4039 mm	40.81 Ω	133.86 Ω	2.2 A	0.361 A
27	0.0142"	0.3607 mm	51.47 Ω	168.82 Ω	1.7 A	0.288 A
28	0.0126"	0.3200 mm	64.90 Ω	212.87 Ω	1.4 A	0.226 A
29	0.0113"	0.2870 mm	81.83 Ω	268.40 Ω	1.2 A	0.182 A
30	0.0100"	0.2540 mm	103.20 Ω	338.50 Ω	0.86 A	0.142 A
31	0.0089"	0.2261 mm	130.10 Ω	426.73 Ω	0.7 A	0.113 A
32	0.0080"	0.2032 mm	164.10 Ω	538.25 Ω	0.53 A	0.091 A
33	0.0071"	0.1803 mm	206.90 Ω	678.63 Ω	0.43 A	0.072 A
34	0.0063"	0.1600 mm	260.90 Ω	855.75 Ω	0.33 A	0.056 A
35	0.0056"	0.1422 mm	329.00 Ω	1079.12 Ω	0.27 A	0.044 A
36	0.0050"	0.1270 mm	414.80 Ω	1360.00 Ω	0.21 A	0.035 A
37	0.0045"	0.1143 mm	523.10 Ω	1715.00 Ω	0.17 A	0.0289 A
38	0.0040"	0.1016 mm	659.60 Ω	2163.00 Ω	0.13 A	0.0228 A
39	0.0035"	0.0889 mm	831.80 Ω	2728.00 Ω	0.11 A	0.0175 A
40	0.0031"	0.0787 mm	1049.00 Ω	3440.00 Ω	0.09 A	0.0137 A

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last updated: 19-Jan-2014