AWG - Wire Gauge Sizes: Current Ratings, Charts, Measurements, and Conversion Guide

Calculate and lookup American Wire Gauge (AWG) specifications including diameter, cross-sectional area, resistance, and current ratings for copper and aluminum conductors. The higher the gauge number, the thinner the wire. This tool provides comprehensive data for single core and multicore wiring cables up to 1000V with PVC insulation at ambient temperatures up to 30°C.

Calculator

Inputs

AWG Gauge Number

Ambient Temperature (°C)

Conductor Material

Core Configuration

Results

Diameter-- mm

Diameter-- in

Cross-Sectional Area-- mm²

Electrical Resistance-- Ω/1000m

Maximum Current Rating-- amps

Temperature Correction Factor--

Corrected Current Rating-- amps

AWG	Diameter (mm)	Diameter (in)	Area (mm²)	Resistance Cu (Ω/1000m)	Resistance Al (Ω/1000m)	Current Rating Cu (amps)
40	0.08	0.0031	0.005	3448	5300	-
39	0.09	0.0035	0.0064	2693	4141	-
38	0.1	0.004	0.0078	2210	3397	-
37	0.11	0.0045	0.0095	1810	2789	-
36	0.13	0.005	0.013	1326	2038	-
35	0.14	0.0056	0.015	1120	1767	-
34	0.16	0.0063	0.02	862	1325	-
33	0.18	0.0071	0.026	663	1019	-
32	0.2	0.008	0.031	556	855	-
30	0.25	0.01	0.049	352	541	-
28	0.33	0.013	0.08	216	331	-
27	0.36	0.014	0.096	180	276	-
26	0.41	0.016	0.13	133	204	-
25	0.45	0.018	0.16	108	166	-
24	0.51	0.02	0.2	88	133	3.5
22	0.64	0.025	0.33	52	80	5
20	0.81	0.032	0.5	34	53	6
18	1	0.04	0.82	21	32	9.5
16	1.3	0.051	1.3	13	20	15
14	1.6	0.064	2.1	8.2	13	24
12	2.1	0.081	3.3	5.2	8	34
10	2.6	0.1	5.3	3.3	5	52
8	3.3	0.13	8.3	2.1	3.2	75
6	4.1	0.17	13.3	1.3	2	95
4	5.2	0.2	21.2	0.81	1.3	120
2	6.5	0.26	33.6	0.51	0.79	170
1	7.4	0.29	42.4	0.41	0.63	180
0 (1/0)	8.3	0.33	53.5	0.32	0.5	200
00 (2/0)	9.3	0.37	67.4	0.26	0.39	225
000 (3/0)	10.4	0.41	85	0.2	0.32	275
0000 (4/0)	11.7	0.46	107	0.16	0.25	325
250	-	-	127	-	-	345
300	-	-	152	-	-	390
400	-	-	178	-	-	415