Wire Gauge Converter

Convert between AWG and metric/imperial measurements

Wire Gauge Converter

Convert between American Wire Gauge (AWG) and metric/imperial measurements

American Wire Gauge (AWG)

Millimeter Diameter

Square Millimeter Area

Inch Diameter

Square Inch Area

Circular Mil Area

Common AWG Values

Visual Wire Gauge Reference

11.68mm

9.27mm

11.68mm

9.27mm

11.68mm

4.12mm

3.26mm

2.59mm

2.05mm

1.63mm

1.29mm

1.02mm

0.81mm

0.64mm

0.51mm

0.41mm

0.32mm

0.26mm

Click on wire gauge or AWG label to select

Complete AWG Conversion Chart

American Wire Gauge specifications and ratings

AWG	Diameter (mm)	Area (mm²)	Resistance (Ω/km)	Max Current (A)	Max Freq (MHz)
4/0 (0000)	11.684	107.200	0.161	302	0.67
3/0 (000)	10.405	85.000	0.203	239	0.84
2/0 (00)	9.266	67.400	0.256	190	1.06
1/0 (0)	8.251	53.500	0.322	150	1.33
1	7.348	42.400	0.407	119	1.68
2	6.544	33.600	0.513	94	2.12
3	5.827	26.700	0.646	75	2.67
4	5.189	21.200	0.815	60	3.37
5	4.621	16.800	1.028	47	4.24
6	4.115	13.300	1.296	37	5.35
7	3.665	10.500	1.634	30	6.73
8	3.264	8.370	2.061	24	8.48
9	2.906	6.630	2.599	19	10.7
10	2.588	5.260	3.277	15	13.5
11	2.305	4.170	4.132	12	17
12	2.053	3.310	5.211	9.3	21.4
13	1.828	2.620	6.571	7.4	27
14	1.628	2.080	8.286	5.9	34
15	1.450	1.650	10.450	4.7	42.8
16	1.291	1.310	13.170	3.7	53.9
17	1.150	1.040	16.610	2.9	67.9
18	1.024	0.823	20.950	2.3	85.6
19	0.912	0.653	26.420	1.8	108
20	0.812	0.518	33.310	1.5	136
21	0.723	0.410	42.000	1.2	171
22	0.644	0.326	52.960	0.92	216
23	0.573	0.258	66.790	0.729	272
24	0.511	0.205	84.220	0.577	343
25	0.455	0.162	106.200	0.457	432
26	0.405	0.129	133.900	0.361	544
27	0.361	0.102	168.900	0.288	686
28	0.321	0.081	212.900	0.226	864
29	0.286	0.064	268.500	0.182	1090
30	0.255	0.051	338.600	0.142	1380
31	0.227	0.040	427.000	0.113	1740
32	0.202	0.032	538.300	0.091	2190
33	0.180	0.025	678.800	0.072	2760
34	0.160	0.020	856.000	0.056	3480
35	0.143	0.016	1079.000	0.044	4380
36	0.127	0.013	1361.000	0.035	5520
37	0.113	0.010	1716.000	0.0289	6960
38	0.101	0.008	2164.000	0.0228	8770
39	0.090	0.006	2729.000	0.0175	11100
40	0.080	0.005	3441.000	0.0137	13900

About Wire Gauges

American Wire Gauge (AWG) is a standardized wire gauge system used in North America to denote the cross-sectional area of electrical wire.

Key Points:

Smaller AWG numbers = larger wire diameter
Each 3 AWG reduction doubles the cross-sectional area
4/0 (0000) is the largest standard size
40 AWG is among the smallest standard sizes

Common Applications

AWG 12-14

Household wiring

AWG 16-18

Appliance cords

AWG 20-24

Electronics, PCB traces

AWG 26-30

Computer cables, telecommunications

Usage Tips

• Enter any known value to find the nearest standard AWG

• Current ratings are for copper wire in free air at 30°C

• Use larger gauges for longer runs to reduce voltage drop

• Click on the visual gauge or chart rows for quick selection

• All conversions find the closest standard AWG size

AWG

Diameter (mm)

Diameter (in)

Area (mm²)

Area (in²)

Circular Mil Area

Quick Select

AWG Chart

Swipe to view all columns

AWG	Dia (mm)	Area (mm²)	Current (A)
4/0	11.68	107.20	302
3/0	10.40	85.00	239
2/0	9.27	67.40	190
1/0	8.25	53.50	150
1	7.35	42.40	119
2	6.54	33.60	94
3	5.83	26.70	75
4	5.19	21.20	60
5	4.62	16.80	47
6	4.12	13.30	37
7	3.67	10.50	30
8	3.26	8.37	24
9	2.91	6.63	19
10	2.59	5.26	15
11	2.31	4.17	12
12	2.05	3.31	9.3
13	1.83	2.62	7.4
14	1.63	2.08	5.9
15	1.45	1.65	4.7
16	1.29	1.31	3.7

Showing first 20 AWG sizes. Use desktop version for complete chart.

Quick Reference

Common Uses:

12-14 Household wiring

16-18 Appliance cords

20-24 Electronics

Remember:

• Lower AWG = Thicker wire

• Higher current capacity with thicker wire

• 4/0 is thickest standard size