Standard Annealed Copper Wire A.W.G. (B&S) - Theoretical Values
(AWG 23 - 50)
| Diameter Inches | Area | Resistance at 68 ° F | |
| AWG | Nom. | Circular Mils | Ohms Per K Feet |
| 23 | .02257 | 509.5 | 20.36 |
| 24 | .02010 | 404.0 | 25.67 |
| 25 | .01790 | 320.4 | 32.37 |
| 26 | .01594 | 254.1 | 40.81 |
| 27 | .01420 | 201.5 | 51.47 |
| 28 | .01264 | 159.8 | 64.90 |
| 29 | .01126 | 126.7 | 81.83 |
| 30 | .01003 | 100.5 | 103.2 |
| 31 | .008928 | 79.7 | 130.1 |
| 32 | .007950 | 63.21 | 164.1 |
| 33 | .007080 | 50.13 | 206.9 |
| 34 | .006305 | 39.75 | 260.9 |
| 35 | .005615 | 31.52 | 329.0 |
| 36 | .005000 | 25.00 | 414.8 |
| 37 | .004453 | 19.83 | 523.1 |
| 38 | .003965 | 15.72 | 659.6 |
| 39 | .003531 | 12.47 | 831.8 |
| 40 | .003145 | 9.888 | 1049 |
| 41 | .00280 | 7.8400 | 1323 |
| 42 | .00249 | 6.2001 | 1673 |
| 43 | .00222 | 4.9284 | 2104 |
| 44 | .00197 | 3.8809 | 2672 |
| 45 | .00176 | 3.0976 | 3348 |
| 46 | .00157 | 2.4649 | 4207 |
| 47 | .00140 | 1.951 | 5317 |
| 48 | .00124 | 1.547 | 6705 |
| 49 | .00111 | 1.227 | 8454 |
| 50 | .00098 | 0.973 | 10660 |