Dimension Comparison list

The Tech & Specification parameters of our company’s wires are in international unit system, with the unit of millimeter (mm). The following list compares American Wire Gauge (AWG) and British Standard Wire Gauge (SWG) and you can use it as references.

 

Line number
Wire Gauge		 Nominal diameter
Nominal Dia.		 Cross-sectional area
Conductor Sectional Area		 Line number
Wire Gauge		 Nominal diameter
Nominal Dia.		 Cross-sectional area
Conductor Sectional Area
AWG SWG mm mil sq.mm sq.mil AWG SWG mm mil sq.mm sq.mil
20 21 0.813 32 0.5189 804.2 35 - 0.142 5.6 0.01589 24.63
21   0.724 28.5 0.4116 637.9   39 0.132 5.2 0.0137 21.24
- 22 0.711 28 0.3973 615.8 36 - 0.127 5 0.01267 19.64
22 - 0.643 25.3 0.3243 520.7 - 40 0.122 4.8 0.01168 18.1
- 23 0.61 24 0.2919 452.4 37 - 0.114 4.5 0.01026 15.9
23 - 0.574 22.6 0.2589 401.2 - 41 0.112 4.4 0.00981 15.21
- 24 0.559 22 0.2452 380.1 38 42 0.102 4 0.00811 12.57
24 - 0.511 20.1 0.2047 317.3 - 43 0.0914 3.6 0.006567 10.18
- 25 0.508 20 0.2027 314.2 39 - 0.0889 3.5 0.006207 9.621
- 26 0.457 18 0.1642 254.5 - 44 0.0813 3.2 0.005189 8.042
25 - 0.455 17.9 0.1624 251.7 40 - 0.0787 3.1 0.004869 7.548
  27 0.417 16.4 0.1363 211.2 41 45 0.0711 2.8 0.003973 6.158
26 - 0.404 15.9 0.1281 198.6 42 - 0.0635 2.5 0.003167 4.909
- 28 0.376 14.8 0.111 172 - 46 0.061 2.4 0.002919 4.524
27 - 0.361 14.2 0.1022 158.4 43 - 0.0599 2.2 0.002452 3.801
- 29 0.345 13.6 0.09375 145.3 44 47 0.0508 2 0.002027 3.142
28 - 0.32 12.6 0.08046 124.7 45 - 0.0447 1.76 0.001569 2.427
- 30 0.315 12.4 0.07794 120.8 - 48 0.0406 1.6 0.001297 2.011
- 31 0.295 11.6 0.0682 105.7 46 - 0.0399 1.57 0.001249 1.932
29 * 0.287 11.3 0.06471 100.3 47 - 0.0356 1.4 0.0009931 1.539
- 32 0.274 10.8 0.05911 91.61 48 - 0.0315 1.24 0.0007791 1.207
30 33 0.254 10 0.05067 78.54 - 49 0.0305 1.2 0.0007296 1.131
- 34 0.234 9.2 0.04289 66.48 49 - 0.0282 1.11 0.0006241 0.966
31   0.226 8.9 0.04014 62.21 - 50 0.0254 1 0.0005067 0.7854
- 35 0.213 8.4 0.03576 55.42 50 - 0.0252 0.99 0.0004968 0.7697
32 - 0.203 8 0.03243 50.27 51 - 0.0224 0.88 0.0003941 0.6082
- 36 0.193 7.6 0.02927 45.36 52   0.0198 0.78 0.0003079 0.4778
33 - 0.18 7.1 0.02554 39.59 53   0.0178 0.70 0.0002488 0.3848
- 37 0.173 6.8 0.02343 36.32 54   0.0157 0.62 0.0001936 0.3019
34   0.16 6.3 0.02011 31.17 55   0.0140 0.55 0.0001539 0.2376
- 38 0.152 6 0.01824 28.27 56   0.0124 0.49 0.0001208 0.1886