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The Standard Wire Gauge (SWG) system is widely used to specify the diameter of electrically conducting wires. It is particularly prevalent in the United Kingdom and other countries using the British Imperial measurements system. SWG is used across various industries, including electrical engineering, telecommunications, automotive, construction, etc. It’s employed to determine the appropriate wire size for a given application, ensuring electrical conductivity and safety.
Outside diameters | 22 SWG 0.711 mm | 20 SWG 0.914 mm | 18 SWG 1.218 mm | 16 SWG 1.625 mm | |
---|---|---|---|---|---|
Inches | mm | KG/Mtr | KG/Mtr | KG/Mtr | KG/Mtr |
1/4″ | 6.35 | – | 0.124 | 0.157 | 0.192 |
5/16″ | 7.95 | – | 0.161 | 0.205 | 0.257 |
3/8″ | 9.525 | – | 0.197 | 0.253 | 0.321 |
1/2″ | 12.7 | 0.213 | 0.27 | 0.35 | 0.451 |
5/8″ | 15.875 | 0.27 | 0.342 | 0.447 | 0.58 |
3/4″ | 19.05 | – | 0.415 | 0.544 | 0.709 |
7/8″ | 22.225 | 0.383 | 0.448 | 0.641 | 0.838 |
1″ | 25.4 | 0.44 | 0.56 | 0.738 | 0.967 |
1 1/4″ | 31.75 | 0.553 | 0.706 | 0.931 | 1.23 |
1 1/2″ | 38.1 | 0.666 | 0.851 | 1.13 | 1.48 |
1 3/4″ | 44.45 | 0.779 | 0.996 | 1.32 | 1.74 |
2″ | 50.8 | 0.892 | 1.14 | 1.51 | 2 |
2 1/2″ | 63.5 | – | – | 1.9 | 2.52 |
3″ | 76.2 | – | – | 2.29 | 3.03 |
3 1/2″ | 88.9 | – | – | 2.67 | 3.55 |
4″ | 101.6 | – | – | 3.06 | 4.07 |
5″ | 127 | – | – | 3.628 | 4.97 |
5 1/2″ | 139.7 | – | – | 4 | 5.481 |
6″ | 152.4 | – | – | 4.36 | 6 |
6 1/2″ | 161.1 | – | – | 4.72 | 6.48 |
Outside diameters | 14 SWG 2.032 mm | 12 SWG 2.641 mm | 11 SWG 2.946 mm | 10 SWG 3.257 mm | |
---|---|---|---|---|---|
Inches | mm | KG/Mtr | KG/Mtr | KG/Mtr | KG/Mtr |
1/4″ | 6.35 | – | – | – | – |
5/16″ | 7.95 | – | – | – | – |
3/8″ | 9.525 | 0.381 | – | – | – |
1/2″ | 12.7 | 0.543 | 0.665 | 0.72 | – |
5/8″ | 15.875 | 0.704 | 0.875 | 0.954 | – |
3/4″ | 19.05 | 0.866 | 1.09 | 1.19 | 1.29 |
7/8″ | 22.225 | 1.03 | 1.3 | 1.42 | 1.55 |
1″ | 25.4 | 1.19 | 1.51 | 1.66 | 1.8 |
1 1/4″ | 31.75 | 1.51 | 1.93 | 2.13 | 2.32 |
1 1/2″ | 38.1 | 1.84 | 2.35 | 2.59 | 2.84 |
1 3/4″ | 44.45 | 2.16 | 2.77 | 3.06 | 3.35 |
2″ | 50.8 | 2.48 | 3.19 | 3.53 | 3.87 |
2 1/2″ | 63.5 | 3.13 | 4.03 | 4.47 | 4.91 |
3″ | 76.2 | 3.77 | 4.87 | 5.4 | 5.64 |
3 1/2″ | 88.9 | 4.42 | 5.7 | 6.34 | 6.97 |
4″ | 101.6 | 5.07 | 6.54 | 7.28 | 8.01 |
5″ | 127 | 6.01 | 7.926 | – | 9.673 |
5 1/2″ | 139.7 | 6.624 | 8.736 | – | 10.675 |
6″ | 152.4 | 7.33 | 9.545 | – | 11.699 |
6 1/2″ | 161.1 | 7.84 | 10.419 | – | 12.72 |
Standard Wire Gauge | Diameter | Turns of wire | Cross-sectional area | |||
---|---|---|---|---|---|---|
in | mm | in−1 | mm−1 | kcmil | mm2 | |
0000000 (7/0) | 0.5 | 12.7 | 2 | 0.0787 | 250 | 127 |
000000 (6/0) | 0.464 | 11.8 | 2.16 | 0.0848 | 215 | 109 |
00000 (5/0) | 0.432 | 11 | 2.31 | 0.0911 | 187 | 94.6 |
0000 (4/0) | 0.4 | 10.2 | 2.5 | 0.0984 | 160 | 81.1 |
000 (3/0) | 0.372 | 9.45 | 2.69 | 0.106 | 138 | 70.1 |
00 (2/0) | 0.348 | 8.84 | 2.87 | 0.113 | 121 | 61.4 |
0 (1/0) | 0.324 | 8.23 | 3.09 | 0.122 | 105 | 53.2 |
1 | 0.3 | 7.62 | 3.33 | 0.131 | 90 | 45.6 |
2 | 0.276 | 7.01 | 3.62 | 0.143 | 76.2 | 38.6 |
3 | 0.252 | 6.4 | 3.97 | 0.156 | 63.5 | 32.2 |
4 | 0.232 | 5.89 | 4.31 | 0.17 | 53.8 | 27.3 |
5 | 0.212 | 5.38 | 4.72 | 0.186 | 44.9 | 22.8 |
6 | 0.192 | 4.88 | 5.21 | 0.205 | 36.9 | 18.7 |
7 | 0.176 | 4.47 | 5.68 | 0.224 | 31 | 15.7 |
8 | 0.16 | 4.06 | 6.25 | 0.246 | 25.6 | 13 |
9 | 0.144 | 3.66 | 6.94 | 0.273 | 20.7 | 10.5 |
10 | 0.128 | 3.25 | 7.81 | 0.308 | 16.4 | 8.3 |
11 | 0.116 | 2.95 | 8.62 | 0.339 | 13.5 | 6.82 |
12 | 0.104 | 2.64 | 9.62 | 0.379 | 10.8 | 5.48 |
13 | 0.092 | 2.34 | 10.9 | 0.428 | 8.46 | 4.29 |
14 | 0.08 | 2.03 | 12.5 | 0.492 | 6.4 | 3.24 |
15 | 0.072 | 1.83 | 13.9 | 0.547 | 5.18 | 2.63 |
16 | 0.064 | 1.63 | 15.6 | 0.615 | 4.1 | 2.08 |
17 | 0.056 | 1.42 | 17.9 | 0.703 | 3.14 | 1.59 |
18 | 0.048 | 1.22 | 20.8 | 0.82 | 2.3 | 1.17 |
19 | 0.04 | 1.02 | 25 | 0.984 | 1.6 | 0.811 |
20 | 0.036 | 0.914 | 27.8 | 1.09 | 1.3 | 0.657 |
21 | 0.032 | 0.813 | 31.3 | 1.23 | 1.02 | 0.519 |
22 | 0.028 | 0.711 | 35.7 | 1.41 | 0.784 | 0.397 |
23 | 0.024 | 0.61 | 41.7 | 1.64 | 0.576 | 0.292 |
24 | 0.022 | 0.559 | 45.5 | 1.79 | 0.484 | 0.245 |
25 | 0.02 | 0.508 | 50 | 1.97 | 0.4 | 0.203 |
26 | 0.018 | 0.457 | 55.6 | 2.19 | 0.324 | 0.164 |
27 | 0.0164 | 0.417 | 61 | 2.4 | 0.269 | 0.136 |
28 | 0.0148 | 0.376 | 67.6 | 2.66 | 0.219 | 0.111 |
29 | 0.0136 | 0.345 | 73.5 | 2.89 | 0.185 | 0.0937 |
30 | 0.0124 | 0.315 | 80.6 | 3.18 | 0.154 | 0.0779 |
Standard Wire Gauge | Diameter | Res. per length (for copper wire) | Mass per length | Current Capacity (A) | |||
---|---|---|---|---|---|---|---|
in | Ω/kft | Ω/km | lb/ft | kg/m | 750 cmil/A | 500 cmil/A | |
0000000 (7/0) | 0.5 | 0.136 | 0.447 | 0.759 | 1.13 | 333 | 500 |
000000 (6/0) | 0.464 | 0.158 | 0.519 | 0.654 | 0.973 | 287 | 431 |
00000 (5/0) | 0.432 | 0.182 | 0.598 | 0.567 | 0.844 | 249 | 373 |
0000 (4/0) | 0.4 | 0.213 | 0.698 | 0.486 | 0.723 | 213 | 320 |
000 (3/0) | 0.372 | 0.246 | 0.807 | 0.42 | 0.625 | 185 | 277 |
00 (2/0) | 0.348 | 0.281 | 0.922 | 0.368 | 0.547 | 161 | 242 |
0 (1/0) | 0.324 | 0.324 | 1.06 | 0.319 | 0.474 | 140 | 210 |
1 | 0.3 | 0.378 | 1.24 | 0.273 | 0.407 | 120 | 180 |
2 | 0.276 | 0.447 | 1.47 | 0.231 | 0.344 | 102 | 152 |
3 | 0.252 | 0.536 | 1.76 | 0.193 | 0.287 | 84.7 | 127 |
4 | 0.232 | 0.632 | 2.07 | 0.163 | 0.243 | 71.8 | 108 |
5 | 0.212 | 0.757 | 2.48 | 0.137 | 0.203 | 59.9 | 89.9 |
6 | 0.192 | 0.923 | 3.03 | 0.112 | 0.167 | 49.2 | 73.7 |
7 | 0.176 | 1.1 | 3.6 | 0.0941 | 0.14 | 41.3 | 62 |
8 | 0.16 | 1.33 | 4.36 | 0.0778 | 0.116 | 34.1 | 51.2 |
9 | 0.144 | 1.64 | 5.38 | 0.063 | 0.0937 | 27.6 | 41.5 |
10 | 0.128 | 2.08 | 6.81 | 0.0498 | 0.0741 | 21.8 | 32.8 |
11 | 0.116 | 2.53 | 8.3 | 0.0409 | 0.0608 | 17.9 | 26.9 |
12 | 0.104 | 3.15 | 10.3 | 0.0329 | 0.0489 | 14.4 | 21.6 |
13 | 0.092 | 4.02 | 13.2 | 0.0257 | 0.0383 | 11.3 | 16.9 |
14 | 0.08 | 5.32 | 17.4 | 0.0194 | 0.0289 | 8.53 | 12.8 |
15 | 0.072 | 6.56 | 21.5 | 0.0157 | 0.0234 | 6.91 | 10.4 |
16 | 0.064 | 8.31 | 27.3 | 0.0124 | 0.0185 | 5.46 | 8.19 |
17 | 0.056 | 10.9 | 35.6 | 0.0095 | 0.0142 | 4.18 | 6.27 |
18 | 0.048 | 14.8 | 48.5 | 0.007 | 0.0104 | 3.07 | 4.61 |
19 | 0.04 | 21.3 | 69.8 | 0.0049 | 0.0072 | 2.13 | 3.2 |
20 | 0.036 | 26.3 | 86.1 | 0.0039 | 0.0059 | 1.73 | 2.59 |
Standard Wire Gauge SWG | Diameter | |
inches | mm | |
7/0 | 0.5 | 12.7 |
6/0 | 0.464 | 11.786 |
5/0 | 0.432 | 10.973 |
4/0 | 0.4 | 10.16 |
3/0 | 0.372 | 9.449 |
2/0 | 0.348 | 8.839 |
1/0 | 0.324 | 8.236 |
1 | 0.3 | 7.62 |
2 | 0.276 | 7.01 |
3 | 0.252 | 6.401 |
4 | 0.232 | 5.893 |
5 | 0.212 | 5.385 |
6 | 0.192 | 4.877 |
7 | 0.176 | 4.47 |
8 | 0.16 | 4.064 |
9 | 0.144 | 3.658 |
10 | 0.128 | 3.251 |
11 | 0.116 | 2.946 |
12 | 0.104 | 2.642 |
13 | 0.092 | 2.337 |
14 | 0.08 | 2.032 |
15 | 0.072 | 1.829 |
16 | 0.064 | 1.626 |
17 | 0.056 | 1.422 |
18 | 0.048 | 1.219 |
19 | 0.04 | 1.016 |
20 | 0.036 | 0.914 |
21 | 0.032 | 0.813 |
22 | 0.028 | 0.711 |
23 | 0.024 | 0.61 |
24 | 0.022 | 0.559 |
25 | 0.02 | 0.508 |
26 | 0.018 | 0.457 |
27 | 0.0164 | 0.417 |
28 | 0.0148 | 0.376 |
29 | 0.0136 | 0.345 |
30 | 0.0124 | 0.315 |
31 | 0.0116 | 0.295 |
32 | 0.0108 | 0.274 |
33 | 0.01 | 0.254 |
34 | 0.0092 | 0.234 |
35 | 0.0084 | 0.213 |
36 | 0.0076 | 0.193 |
37 | 0.0068 | 0.173 |
38 | 0.006 | 0.152 |
39 | 0.0052 | 0.132 |
40 | 0.0048 | 0.122 |
41 | 0.0044 | 0.112 |
42 | 0.004 | 0.102 |
43 | 0.0036 | 0.091 |
44 | 0.0032 | 0.081 |
45 | 0.0028 | 0.071 |
46 | 0.0024 | 0.061 |
47 | 0.002 | 0.051 |
48 | 0.0016 | 0.041 |
49 | 0.0012 | 0.03 |
50 | 0.001 | 0.025 |
The pricing of wire gauges can vary based on factors such as material (copper, aluminium, etc.), diameter, length, and supplier. Generally, thicker wires (lower gauge numbers) are more expensive due to the higher material required. Additionally, Standard Wire Gauge Price can fluctuate based on market demand, the quality of the wire, and any additional features such as insulation or special coatings. Obtaining quotes from multiple suppliers is recommended to ensure the best price for your specific needs. For more information or assistance, feel free to contact us at +91 98190 44957.
You can download a Standard Wire Gauge Table PDF from Steelo Fabrica. This chart provides comprehensive information on wire gauges and their corresponding measurements.
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