SWG is shot form of Standard Wire Gauge. SWG is also British Standard Gauge (BSG) or Imperial Wire Gauge (IWG). This was 1884 when the British Board of Trade modified the Bermingham Wire Gauge into Standard Wire Gauge and it is used as a standard to compare different types of wires since then.
Though SWG faced a prominent decline in popularity it is still used as a standard for measurement of wire gauges of different types of wires. The quality of wires is judged by the wire gauge, diameter of wire & their cross-section area. On this page, you can calculate the diameter in millimetres & inches and the cross-sectional area of the wire in mm2.
Select SWG and press calculate button:
The n gauge wire's cross sercional area An in square millimeters (mm2) is equal to pi divided by 4 times the square wire diameter d in millimeters (mm):
An (mm2) = (π/4)×dn2
| SWG # | Diameter (mm) |
Area (mm2) |
|---|---|---|
| 7/0 | 12.700 | 126.6769 |
| 6/0 | 11.786 | 109.0921 |
| 5/0 | 10.973 | 94.5638 |
| 4/0 | 10.160 | 81.0732 |
| 3/0 | 9.449 | 70.1202 |
| 2/0 | 8.839 | 61.3643 |
| 0 | 8.230 | 53.1921 |
| 1 | 7.620 | 45.6037 |
| 2 | 7.010 | 38.5989 |
| 3 | 6.401 | 32.1780 |
| 4 | 5.893 | 27.2730 |
| 5 | 5.385 | 22.7735 |
| 6 | 4.877 | 18.6793 |
| 7 | 4.470 | 15.6958 |
| 8 | 4.064 | 12.9717 |
| 9 | 3.658 | 10.5071 |
| 10 | 3.251 | 8.3019 |
| 11 | 2.946 | 6.8183 |
| 12 | 2.642 | 5.4805 |
| 13 | 2.337 | 4.2888 |
| 14 | 2.032 | 3.2429 |
| 15 | 1.829 | 2.6268 |
| 16 | 1.626 | 2.0755 |
| 17 | 1.422 | 1.5890 |
| 18 | 1.219 | 1.1675 |
| 19 | 1.016 | 0.8107 |
| 20 | 0.914 | 0.6567 |
| 21 | 0.813 | 0.5189 |
| 22 | 0.711 | 0.3973 |
| 23 | 0.610 | 0.2919 |
| 24 | 0.559 | 0.2452 |
| 25 | 0.5080 | 0.2027 |
| 26 | 0.4572 | 0.1642 |
| 27 | 0.4166 | 0.1363 |
| 28 | 0.3759 | 0.1110 |
| 29 | 0.3454 | 0.0937 |
| 30 | 0.3150 | 0.0779 |
| 31 | 0.2946 | 0.0682 |
| 32 | 0.2743 | 0.0591 |
| 33 | 0.2540 | 0.0507 |
| 34 | 0.2337 | 0.0429 |
| 35 | 0.2134 | 0.0358 |
| 36 | 0.1930 | 0.0293 |
| 37 | 0.1727 | 0.0234 |
| 38 | 0.1524 | 0.0182 |
| 39 | 0.1321 | 0.0137 |
| 40 | 0.1219 | 0.0117 |
| 41 | 0.1118 | 0.0098 |
| 42 | 0.1016 | 0.0081 |
| 43 | 0.0914 | 0.0066 |
| 44 | 0.0813 | 0.0052 |
| 45 | 0.0711 | 0.0040 |
| 46 | 0.0610 | 0.0029 |
| 47 | 0.0508 | 0.0020 |
| 48 | 0.0406 | 0.0013 |
| 49 | 0.0305 | 0.0007 |
| 50 | 0.0254 | 0.0005 |
Abandoned wire checks ought to be estimated by computing the same cross sectional copper region. To start with, measure the exposed breadth of a solitary strand and find the round mils esteem in the column that matches your estimation. Second, duplicate the round mils by the quantity of strands in the link.