Values are stated in approximate decimals of an inch excluding the metric numbers. As a number of gauges are in use, it is advisable to state the thickness in thousands when specifying in gauge number. Metric wire gauge is 10 times the diameter in millimeters.
AWG = American Wire Gauge| S.W.G. | Wire Number | A.W.G. or B&S | A.W.G. Metric |
|---|---|---|---|
| (Inches) | (Gauge) | (Inches) | (MM) |
| 0.300 | 1 | 0.289297 | 7,348 |
| 0.276 | 2 | 0.257627 | 6,543 |
| 0.252 | 3 | 0.229423 | 5,827 |
| 0.232 | 4 | 0.2043 | 5,189 |
| 0.2120 | 5 | 0.1819 | 4,621 |
| 0.1920 | 6 | 0.1620 | 4,115 |
| 0.1760 | 7 | 0.1443 | 3,665 |
| 0.1600 | 8 | 0.1285 | 3,264 |
| 0.1440 | 9 | 0.1144 | 2,906 |
| 0.1280 | 10 | 0.1019 | 2,588 |
| 0.1160 | 11 | 0.0907 | 2,304 |
| 0.1040 | 12 | 0.0808 | 2,052 |
| 0.0920 | 13 | 0.0720 | 1,829 |
| 0.0800 | 14 | 0.0641 | 1,628 |
| 0.0720 | 15 | 0.0571 | 1,450 |
| 0.0640 | 16 | 0.0508 | 1,291 |
| 0.0560 | 17 | 0.0453 | 1,150 |
| 0.0480 | 18 | 0.0403 | 1,024 |
| 0.0400 | 19 | 0.0359 | 0,9119 |
| 0.0360 | 20 | 0.0320 | 0,8128 |
| 0.0320 | 21 | 0.0285 | 0,7239 |
| 0.0280 | 22 | 0.0253 | 0,6426 |
| 0.0240 | 23 | 0.0226 | 0,5740 |
| 0.0220 | 24 | 0.0201 | 0,5106 |
| 0.0200 | 25 | 0.0179 | 0,4547 |
| 0.0180 | 26 | 0.0159 | 0,4038 |
| 0.0164 | 27 | 0.0142 | 0,3606 |
| 0.0148 | 28 | 0.0126 | 0,3200 |
| 0.0136 | 29 | 0.0113 | 0,2870 |
| 0.0124 | 30 | 0.0100 | 0,2540 |
| 0.0116 | 31 | 0.0089 | 0,2261 |
| 0.0108 | 32 | 0.0080 | 0,2032 |
| 0.0100 | 33 | 0.0071 | 0,1803 |
| 0.0092 | 34 | 0.0063 | 0,1601 |
| 0.0084 | 35 | 0.0056 | 0,1422 |
| 0.0076 | 36 | 0.0050 | 0,1270 |
| 0.0068 | 37 | 0.0045 | 0,1143 |
| 0.0060 | 38 | 0.0040 | 0,1016 |
| 0.0052 | 39 | 0.0035 | 0,0889 |
| 0.0048 | 40 | 0.0031 | 0,0787 |
| 0.0044 | 41 | 0.0028 | 0,0711 |
| 0.0040 | 42 | 0.0025 | 0,0635 |
| 0.0036 | 43 | 0.0022 | 0,0559 |
| 0.0032 | 44 | 0.0020 | 0,0508 |
| 0.0028 | 45 | 0.0018 | 0,0457 |
| 0.0024 | 46 | 0.0016 | 0,0406 |
| 0.0020 | 47 | 0.0014 | 0,0350 |
| 0.0016 | 48 | 0.0012 | 0.0305 |
| 0.0012 | 49 | 0.0011 | 0,0279 |
| 0.0010 | 50 | 0.0010 | 0,0254 |