AWG Wire Reference

Reference table for AWG wire gauge with diameter, cross-section area, resistance, and current capacity

Reverse Lookup: Find AWG by Required Current

Required Current (A)

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Standard values for copper wire at 20°C. Current ratings are approximate.

AWG	Dia. (mm)	Dia. (in)	Area (mm²)	Res. (Ω/km)	Res. (Ω/kft)	Chassis (A)	Power (A)
0000 (4/0)	11.6840	0.4600	107.22	0.161	0.049	260	380
000 (3/0)	10.4050	0.4096	85.03	0.203	0.062	225	328
00 (2/0)	9.2660	0.3648	67.43	0.256	0.078	195	283
0 (1/0)	8.2510	0.3249	53.49	0.322	0.098	170	245
1	7.3480	0.2893	42.41	0.407	0.124	150	211
2	6.5440	0.2576	33.63	0.513	0.156	130	181
3	5.8270	0.2294	26.67	0.646	0.197	115	158
4	5.1890	0.2043	21.15	0.815	0.248	100	135
5	4.6210	0.1819	16.77	1.028	0.313	88	118
6	4.1150	0.1620	13.30	1.296	0.395	75	101
7	3.6650	0.1443	10.55	1.634	0.498	65	89
8	3.2640	0.1285	8.37	2.061	0.628	55	73
9	2.9060	0.1144	6.63	2.599	0.792	48	64
10	2.5880	0.1019	5.26	3.277	0.999	40	55
11	2.3050	0.0907	4.17	4.132	1.260	35	47
12	2.0530	0.0808	3.31	5.211	1.588	30	41
13	1.8280	0.0720	2.62	6.571	2.003	25	35
14	1.6280	0.0641	2.08	8.286	2.525	20	32
15	1.4500	0.0571	1.65	10.450	3.184	17	28
16	1.2910	0.0508	1.31	13.170	4.016	13	22
17	1.1500	0.0453	1.04	16.610	5.064	11	19
18	1.0240	0.0403	0.8231	20.950	6.385	10	16
19	0.9116	0.0359	0.6527	26.420	8.051	8	14
20	0.8118	0.0320	0.5176	33.310	10.150	7	11
21	0.7229	0.0285	0.4105	42.000	12.800	5	9
22	0.6438	0.0253	0.3255	52.960	16.140	5	7
23	0.5733	0.0226	0.2582	66.790	20.360	4	6
24	0.5106	0.0201	0.2047	84.220	25.670	3.5	5
25	0.4547	0.0179	0.1624	106	32.370	3	4.5
26	0.4049	0.0159	0.1288	134	40.810	2.5	3.5
27	0.3606	0.0142	0.1021	169	51.470	2	3
28	0.3211	0.0126	0.0810	213	64.900	1.5	2.5
29	0.2859	0.0113	0.0642	269	81.840	1.2	2
30	0.2546	0.0100	0.0509	339	103	1	1.5
31	0.2268	0.0089	0.0404	427	130	0.8	1.2
32	0.2019	0.0080	0.0320	538	164	0.6	1
33	0.1798	0.0071	0.0254	679	207	0.5	0.8
34	0.1601	0.0063	0.0201	856	261	0.4	0.6
35	0.1426	0.0056	0.0160	1079	329	0.3	0.5
36	0.1270	0.0050	0.0127	1361	415	0.25	0.4
37	0.1131	0.0044	0.0100	1716	523	0.2	0.3
38	0.1007	0.0040	0.0080	2164	660	0.15	0.25
39	0.0897	0.0035	0.0063	2729	832	0.12	0.2
40	0.0799	0.0031	0.0050	3441	1049	0.1	0.15