AWG Wire Gauge Chart

American Wire Gauge (AWG) chart with diameter, cross-sectional area, resistance, and ampacity ratings.

44 values

AWG	Diameter(mm)	Diameter(in)	Area(mm2)	Area(kcmil)	Resistance(ohm/km)	Resistance(ohm/kft)	Chassis Wiring(A)	Power Transmission(A)
0000 (4/0)	11.684	0.46	107.22	211.6	0.1608	0.04901	380	302
000 (3/0)	10.405	0.4096	85.03	167.8	0.2028	0.0618	328	239
00 (2/0)	9.266	0.3648	67.43	133.1	0.2557	0.07793	283	190
0 (1/0)	8.251	0.3249	53.49	105.5	0.3224	0.09827	245	150
1	7.348	0.2893	42.41	83.69	0.4066	0.1239	211	119
2	6.544	0.2576	33.63	66.37	0.5127	0.1563	181	94
3	5.827	0.2294	26.67	52.63	0.6465	0.197	158	75
4	5.189	0.2043	21.15	41.74	0.8152	0.2485	135	60
5	4.621	0.1819	16.77	33.1	1.028	0.3133	118	47
6	4.115	0.162	13.3	26.25	1.296	0.3951	101	37
7	3.665	0.1443	10.55	20.82	1.634	0.4982	89	30
8	3.264	0.1285	8.366	16.51	2.061	0.6282	73	24
9	2.906	0.1144	6.634	13.09	2.599	0.7921	64	19
10	2.588	0.1019	5.261	10.38	3.277	0.9989	55	15
11	2.305	0.0907	4.172	8.234	4.132	1.26	47	12
12	2.053	0.0808	3.309	6.53	5.211	1.588	41	9.3
13	1.828	0.072	2.624	5.178	6.571	2.003	35	7.4
14	1.628	0.0641	2.081	4.107	8.286	2.525	32	5.9
15	1.45	0.0571	1.65	3.257	10.45	3.184	28	4.7
16	1.291	0.0508	1.309	2.583	13.17	4.016	22	3.7
17	1.15	0.0453	1.038	2.048	16.61	5.064	19	2.9
18	1.024	0.0403	0.823	1.624	20.95	6.385	16	2.3
19	0.912	0.0359	0.653	1.288	26.42	8.051	14	1.8
20	0.812	0.032	0.518	1.022	33.31	10.15	11	1.5
21	0.723	0.0285	0.411	0.81	42	12.8	9	1.2
22	0.644	0.0253	0.326	0.642	52.96	16.14	7	0.92
23	0.573	0.0226	0.258	0.509	66.79	20.36	4.7	0.73
24	0.511	0.0201	0.205	0.404	84.22	25.67	3.5	0.58
25	0.455	0.0179	0.162	0.32	106.2	32.37	2.7	0.46
26	0.405	0.0159	0.129	0.254	133.9	40.81	2.2	0.36
27	0.361	0.0142	0.102	0.202	168.9	51.47	1.7	0.29
28	0.321	0.0126	0.081	0.16	212.9	64.9	1.4	0.23
29	0.286	0.0113	0.064	0.127	268.5	81.84	1.2	0.18
30	0.255	0.01	0.051	0.101	338.6	103.2	0.86	0.14
31	0.227	0.0089	0.04	0.08	426.9	130.1	0.7	0.11
32	0.202	0.008	0.032	0.063	538.3	164.1	0.53	0.09
33	0.18	0.0071	0.025	0.05	678.8	206.9	0.43	0.07
34	0.16	0.0063	0.02	0.04	856	260.9	0.33	0.06
35	0.143	0.0056	0.016	0.032	1079	328.8	0.27	0.05
36	0.127	0.005	0.013	0.025	1361	414.8	0.21	0.04
37	0.113	0.0045	0.01	0.02	1716	523.1	0.17	0.03
38	0.101	0.004	0.008	0.016	2164	659.6	0.13	0.02
39	0.09	0.0035	0.006	0.012	2729	831.8	0.11	0.02
40	0.08	0.0031	0.005	0.01	3441	1049	0.09	0.01

Notes

Ampacity values are for copper wire at 30C ambient, single conductor in free air. Actual ampacity depends on insulation type, ambient temperature, number of conductors, and installation method. Always consult NEC or local codes for specific applications.

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