Fast!
Same Day
Shipping
800-626-6622 | 215-529-1560
Loading...

What is AWG?

Since 1857, the American wire gauge (AWG), also known as the Brown & Sharpe wire gauge, has been predominantly used in the United States to determine the current-carrying capacity for round, solid, nonferrous, electrically conducting wire by using the cross-sectional area as a important determining factor.

This AWG table is for single, solid, round conductors. Stranded wire's cross-sectional area of the total conductors is used to determine the AWG, which in turn determines the electrical resistance and current-carrying capacity. Stranded wire, when compared to solid wire, will always have a larger overall diameter due to small gaps between strands.

Category 5, Category 6 network cable and many other cables will commonly have the specification printed on the jacket. Cat5e network cable in commonly 24 AWG while Serial ATA cables are normally 26 AWG.

This table is based on plastic insulation and does not take skin effect into account. The diameter information, allowable current (ampacity) and resistance of various gauges wires applies to solid wires while assuming DC/AC frequencies at 60 Hz or less.

AWGDiameterTurns of WireCopper Resistance (Ω/kFT)Copper Resistance (Ω/km)NEC Copper Wire Ampacity with 60/75/90°C insulation (A)Approximate Stranded Metric Equivalents
0000 (4/0)11.684 mm
0.46 inch
0.856 per cm
2.17 per inch
0.049010.1608195 / 230 / 260 
000 (3/0)10.404 mm
0.4096 inch
0.961 per cm
2.44 per inch
0.06180.2028165 / 200 / 225 
00 (2/0)9.266 mm
0.3648 inch
1.08 per cm
2.74 per inch
0.077930.2557145 / 175 / 195 
0 (1/0)8.252 mm
0.3249 inch
1.21 per cm
3.08 per inch
0.098270.3224125 / 150 / 170 
17.348 mm
0.2893 inch
1.36 per cm
3.46 per inch
0.12390.4066110 / 130 / 150 
26.544 mm
0.2576 inch
1.53 per cm
3.88 per inch
0.15630.512795 / 115 / 130 
35.827 mm
0.2294 inch
1.72 per cm
4.36 per inch
0.1970.646585 / 100 / 110196/0.4
45.189 mm
0.2043 inch
1.93 per cm
4.89 per inch
0.24850.815270 / 85 / 95 
54.621 mm
0.1819 inch
2.16 per cm
5.5 per inch
0.31331.028 126/0.4
64.115 mm
0.162 inch
2.43 per cm
6.17 per inch
0.39511.29655 / 65 / 75 
73.665 mm
0.1443 inch
2.73 per cm
6.93 per inch
0.49821.634 80/0.4
83.264 mm
0.1285 inch
3.06 per cm
7.78 per inch
0.62822.06140 / 50 / 55 
92.906 mm
0.1144 inch
3.44 per cm
8.74 per inch
0.79212.599 84/0.3
102.588 mm
0.1019 inch
3.86 per cm
9.81 per inch
0.99893.27730 / 35 / 40
112.305 mm
0.0907 inch
4.34 per cm
11 per inch
1.264.132 56/0.3
122.053 mm
0.0808 inch
4.87 per cm
12.4 per inch
1.5885.21125 / 25 / 30 (20) 
131.828 mm
0.072 inch
5.47 per cm
13.9 per inch
2.0036.571 50/0.25
141.628 mm
0.0641 inch
6.14 per cm
15.6 per inch
2.5258.28620 / 20 / 25 (15) 
151.45 mm
0.0571 inch
6.9 per cm
17.5 per inch
3.18410.45 30/0.25
161.291 mm
0.0508 inch
7.75 per cm
19.7 per inch
4.01613.17-- / -- / 18 (10)
171.15 mm
0.0453 inch
8.7 per cm
22.1 per inch
5.06416.61 32/0.2
181.024 mm
0.0403 inch
9.77 per cm
24.8 per inch
6.38520.95-- / -- / 14 (7)24/0.2
190.912 mm
0.0359 inch
11 per cm
27.9 per inch
8.05126.42 
200.812 mm
0.032 inch
12.3 per cm
31.3 per inch
10.1533.31 16/0.2
210.723 mm
0.0285 inch
13.8 per cm
35.1 per inch
12.842  
220.644 mm
0.0253 inch
15.5 per cm
39.5 per inch
16.1452.96 7/0.25
230.573 mm
0.0226 inch
17.4 per cm
44.3 per inch
20.3666.79  
240.511 mm
0.0201 inch
19.6 per cm
49.7 per inch
25.6784.22 1/0.5, 7/0.2, 30/0.1
250.455 mm
0.0179 inch
22 per cm
55.9 per inch
32.37106.2  
260.405 mm
0.0159 inch
24.7 per cm
62.7 per inch
40.81133.9 7/0.15
270.361 mm
0.0142 inch
27.7 per cm
70.4 per inch
51.47168.9  
280.321 mm
0.0126 inch
31.1 per cm
79.1 per inch
64.9212.9  
290.286 mm
0.0113 inch
35 per cm
88.8 per inch
81.84268.5  
300.255 mm
0.01 inch
39.3 per cm
99.7 per inch
103.2338.6 1/0.25, 7/0.1
310.227 mm
0.00893 inch
44.1 per cm
112 per inch
130.1426.9  
320.202 mm
0.00795 inch
49.5 per cm
126 per inch
164.1538.3 1/0.2, 7/0.08
330.18 mm
0.00708 inch
55.6 per cm
141 per inch
206.9678.8  
340.16 mm
0.0063 inch
62.4 per cm
159 per inch
260.9856  
350.143 mm
0.00561 inch
70.1 per cm
178 per inch
3291079  
360.127 mm
0.005 inch
78.7 per cm
200 per inch
414.81361  
370.113 mm
0.00445 inch
88.4 per cm
225 per inch
523.11716  
380.101 mm
0.00397 inch
99.3 per cm
252 per inch
659.62164  
390.0897 mm
0.00353 inch
111 per cm
283 per inch
831.82729  
400.0799 mm
0.00314 inch
125 per cm
318 per inch
10493441