Copper Wire - Electrical Resistance vs. Gauge

Gauge, weight, circular mils and electrical resistance in copper wire. Data includes AWG Gauge, Area (Circular Mils), Diameter (mils), Electrical Resistance (Ohms/1000 ft), and Weight (lb/1000 ft) at 77°F (25°C).

AWG Gauge	Diameter (mils)	Area (Circular Mils)	Electrical Resistance (Ohms/1000 ft)	Weight (lb/1000 ft)
0000 (4/0)	460	212000	0.05	641
000 (3/0)	410	168000	0.063	508
00 (2/0)	365	133000	0.0795	403
0 (1/0)	325	106000	0.1	319
1	289	83700	0.126	253
2	258	66400	0.159	201
3	229	52600	0.201	159
4	204	41700	0.253	126
5		33100	0.319	100
6	162	26300	0.403	79.5
7		20800	0.508	63
8	128	16500	0.641	50
9		13100	0.808	39.6
10	102	10400	1.02	31.4
11		8230	1.28	24.9
12	81	6530	1.62	19.8
13		5180	2.04	15.7
14	64	4110	2.58	12.4
15		3260	3.25	9.86
16	51	2580	4.09	7.82
17		2050	5.16	6.2
18	40	1620	6.51	4.92
19		1290	8.21	3.9
20	32	1020	10.4	3.09
21		810	13.1	2.45
22	25.3	642	16.5	1.94
23		509	20.8	1.54
24	20.1	404	26.2	1.22
25		320	33	0.97
26	15.9	254	41.6	0.769
27		202	52.5	0.61
28	12.6	160	66.2	0.484
29		127	83.4	0.384
30	10	101	105	0.304
31		79.7	133	0.241
32	8	63.2	167	0.191
33		50.1	211	0.152
34	6.3	39.8	266	0.12
35		31.6	335	0.095
36	5	25	423	0.076
37		19.8	533	0.06
38	4	15.7	673	0.048
39		12.5	848	0.038
40	3.1	9.9	1070	0.02