#!/usr/bin/perl -w use strict; my $pi = 2 * atan2(1,0); sub awg($) { my $awg = shift; my $term = 92**((36 - $awg)/39); my $dia_in = 0.005 * $term; my $dia_mm = 0.127 * $term; my $area = $pi * $dia_mm * $dia_mm / 4; printf("%2d %6.4f %9.6f\n", $awg, $dia_mm, $area); } for (my $awg = 0; $awg < 37; $awg++) { awg($awg); } __END__ /// https://en.wikipedia.org/wiki/Awg AWG Diameter Turns of wire, Area < Copper wire > without insul. Res./length < Ampacity,* > < Fusing current > 60 °C 75 °C 90 °C Preece < Onderdonk > in mm per in per cm kcmil mm2 mΩ/m mΩ/ft A A A ~10 s 1 s 32 ms 0000 0.4600 11.684 2.17 0.856 212 107 0.1608 0.04901 195 230 260 3.2 kA 33 kA 182 kA 000 0.4096 10.405 2.44 0.961 168 85.0 0.2028 0.06180 165 200 225 2.7 kA 26 kA 144 kA 00 0.3648 9.266 2.74 1.08 133 67.4 0.2557 0.07793 145 175 195 2.3 kA 21 kA 115 kA 0 0.3249 8.251 3.08 1.21 106 53.5 0.3224 0.09827 125 150 170 1.9 kA 16 kA 91 kA 1 0.2893 7.348 3.46 1.36 83.7 42.4 0.4066 0.1239 110 130 145 1.6 kA 13 kA 72 kA 2 0.2576 6.544 3.88 1.53 66.4 33.6 0.5127 0.1563 95 115 130 1.3 kA 10.2 kA 57 kA 3 0.2294 5.827 4.36 1.72 52.6 26.7 0.6465 0.1970 85 100 115 1.1 kA 8.1 kA 45 kA 4 0.2043 5.189 4.89 1.93 41.7 21.2 0.8152 0.2485 70 85 95 946 A 6.4 kA 36 kA 5 0.1819 4.621 5.50 2.16 33.1 16.8 1.028 0.3133 795 A 5.1 kA 28 kA 6 0.1620 4.115 6.17 2.43 26.3 13.3 1.296 0.3951 55 65 75 668 A 4.0 kA 23 kA 7 0.1443 3.665 6.93 2.73 20.8 10.5 1.634 0.4982 561 A 3.2 kA 18 kA 8 0.1285 3.264 7.78 3.06 16.5 8.37 2.061 0.6282 40 50 55 472 A 2.5 kA 14 kA 9 0.1144 2.906 8.74 3.44 13.1 6.63 2.599 0.7921 396 A 2.0 kA 11 kA 10 0.1019 2.588 9.81 3.86 10.4 5.26 3.277 0.9989 30 35 40 333 A 1.6 kA 8.9 kA 11 0.0907 2.305 11.0 4.34 8.23 4.17 4.132 1.260 280 A 1.3 kA 7.1 kA 12 0.0808 2.053 12.4 4.87 6.53 3.31 5.211 1.588 20 25 30 235 A 1.0 kA 5.6 kA 13 0.0720 1.828 13.9 5.47 5.18 2.62 6.571 2.003 198 A 798 A 4.5 kA 14 0.0641 1.628 15.6 6.14 4.11 2.08 8.286 2.525 15 20 25 166 A 633 A 3.5 kA 15 0.0571 1.450 17.5 6.90 3.26 1.65 10.45 3.184 140 A 502 A 2.8 kA 16 0.0508 1.291 19.7 7.75 2.58 1.31 13.17 4.016 18 117 A 398 A 2.2 kA 17 0.0453 1.150 22.1 8.70 2.05 1.04 16.61 5.064 99 A 316 A 1.8 kA 18 0.0403 1.024 24.8 9.77 1.62 0.823 20.95 6.385 10 14 16 83 A 250 A 1.4 kA 19 0.0359 0.912 27.9 11.0 1.29 0.653 26.42 8.051 — — — 70 A 198 A 1.1 kA 20 0.0320 0.812 31.3 12.3 1.02 0.518 33.31 10.15 5 11 — 58.5 A 158 A 882 A 21 0.0285 0.723 35.1 13.8 0.810 0.410 42.00 12.80 — — — 49 A 125 A 700 A 22 0.0253 0.644 39.5 15.5 0.642 0.326 52.96 16.14 5 7 — 41 A 99 A 551 A 23 0.0226 0.573 44.3 17.4 0.509 0.258 66.79 20.36 — — — 35 A 79 A 440 A 24 0.0201 0.511 49.7 19.6 0.404 0.205 84.22 25.67 2.1 3.5 — 29 A 62 A 348 A 25 0.0179 0.455 55.9 22.0 0.320 0.162 106.2 32.37 — — — 24 A 49 A 276 A 26 0.0159 0.405 62.7 24.7 0.254 0.129 133.9 40.81 1.3 2.2 — 20 A 39 A 218 A 27 0.0142 0.361 70.4 27.7 0.202 0.102 168.9 51.47 — — — 17 A 31 A 174 A 28 0.0126 0.321 79.1 31.1 0.160 0.0810 212.9 64.90 0.83 1.4 — 14 A 24 A 137 A 29 0.0113 0.286 88.8 35.0 0.127 0.0642 268.5 81.84 — — — 12 A 20 A 110 A 30 0.0100 0.255 99.7 39.3 0.101 0.0509 338.6 103.2 0.52 0.86 — 10 A 15 A 86 A 31 0.00893 0.227 112 44.1 0.0797 0.0404 426.9 130.1 — — — 9 A 12 A 69 A 32 0.00795 0.202 126 49.5 0.0632 0.0320 538.3 164.1 0.32 0.53 — 7 A 10 A 54 A 33 0.00708 0.180 141 55.6 0.0501 0.0254 678.8 206.9 — — — 6 A 7.7 A 43 A 34 0.00630 0.160 159 62.4 0.0398 0.0201 856.0 260.9 0.18 0.3 — 5 A 6.1 A 34 A 35 0.00561 0.143 178 70.1 0.0315 0.0160 1079 329.0 — — — 4 A 4.8 A 27 A 36 0.00500 0.127 200 78.7 0.0250 0.0127 1361 414.8 — — — 4 A 3.9 A 22 A 37 0.00445 0.113 225 88.4 0.0198 0.0100 1716 523.1 — — — 3 A 3.1 A 17 A 38 0.00397 0.101 252 99.3 0.0157 0.00797 2164 659.6 — — — 3 A 2.4 A 14 A 39 0.00353 0.0897 283 111 0.0125 0.00632 2729 831.8 — — — 2 A 1.9 A 11 A 40 0.00314 0.0799 318 125 0.00989 0.00501 3441 1049 — — — 1 A 1.5 A 8.5 A * at 20 °C insulation material temperature rating, or for single unbundled wires in equipment for 16 AWG and smaller /// the code above prints 0 8.2515 53.475121 1 7.3481 42.407699 2 6.5437 33.630834 3 5.8273 26.670464 4 5.1894 21.150639 5 4.6213 16.773220 6 4.1154 13.301768 7 3.6649 10.548782 8 3.2636 8.365564 9 2.9064 6.634194 10 2.5882 5.261155 11 2.3048 4.172286 12 2.0525 3.308773 13 1.8278 2.623976 14 1.6277 2.080908 15 1.4495 1.650235 16 1.2908 1.308696 17 1.1495 1.037843 18 1.0237 0.823047 19 0.9116 0.652706 20 0.8118 0.517619 21 0.7229 0.410491 22 0.6438 0.325534 23 0.5733 0.258160 24 0.5106 0.204730 25 0.4547 0.162359 26 0.4049 0.128756 27 0.3606 0.102108 28 0.3211 0.080976 29 0.2859 0.064217 30 0.2546 0.050926 31 0.2268 0.040386 32 0.2019 0.032028 33 0.1798 0.025399 34 0.1601 0.020142 35 0.1426 0.015974 36 0.1270 0.012668 /// https://en.wikipedia.org/wiki/IEC_60228 International standard wire sizes (IEC 60228) [mm²] 0.5 0.75 1 1.5 2.5 4 6 10 16 25 35 50 70 95 120 150 185 240 300 400 500 630 800 1000 1200 1400 1600 1800 2000 2500 /// found this in a forum somewhere AWG Stranding Inches mm Circular_mil Weight Weight D.C._Resistance D.C._Resistance lbs/1000ft kg/km Ohms/1000ft Ohms/km 36 Solid .0050 0.127 25.0 .076 .113 445.0 1460.0 36 7/44 .006 0.152 28.0 .085 .126 371.0 1271.0 34 Solid .0063 0.160 39.7 .120 .179 280.0 918.0 34 7/42 .0075 0.192 43.8 .132 .196 237.0 777.0 32 Solid .008 0.203 67.3 .194 .289 174.0 571.0 32 7/40 .008 0.203 67.3 .203 .302 164.0 538.0 32 19/44 .009 0.229 76.0 .230 .342 136.0 448.0 30 Solid .010 0.254 100.0 .300 .450 113.0 365.0 30 7/38 .012 0.305 112.0 .339 .504 103.0 339.0 30 19/42 .012 0.305 118.8 .359 .534 87.3 286.7 28 Solid .013 0.330 159.0 .480 .720 70.8 232.0 28 7/36 .015 0.381 175.0 .529 .787 64.9 213.0 28 19/40 .016 0.406 182.6 .553 .823 56.7 186.0 27 7/35 .018 0.457 219.5 .664 .988 54.5 179.0 26 Solid .016 0.409 256.0 .770 1.140 43.6 143.0 26 10/36 .021 0.533 250.0 .757 1.130 41.5 137.0 26 19/38 .020 0.508 304.0 .920 1.370 34.4 113.0 26 7/34 .019 0.483 277.8 .841 1.250 37.3 122.0 24 Solid .020 0.511 404.0 1.22 1.820 27.3 89.4 24 7/32 .024 0.610 448.0 1.36 2.020 23.3 76.4 24 10/34 .023 0.582 396.9 1.20 1.790 26.1 85.6 24 19/36 .024 0.610 475.0 1.43 2.130 21.1 69.2 24 41/40 .023 0.582 384.4 1.16 1.730 25.6 84.0 22 Solid .025 0.643 640.0 1.95 2.910 16.8 55.3 22 7/30 .030 0.762 700.0 2.12 3.160 14.7 48.4 22 19/34 .031 0.787 754.1 2.28 3.390 13.7 45.1 22 26/36 .030 0.762 650.0 1.97 2.930 15.9 52.3 20 Solid .032 0.813 1020.0 3.10 4.610 10.5 34.6 20 7/28 .038 0.965 1111.0 3.49 5.190 10.3 33.8 20 10/30 .035 0.889 1000.0 3.03 4.050 10.3 33.9 20 19/32 .037 0.940 1216.0 3.70 5.480 8.6 28.3 20 26/34 .036 0.914 1031.9 3.12 4.640 10.0 33.0 20 41/36 .036 0.914 1025.0 3.10 4.610 10.0 32.9 18 Solid .040 1.020 1620.0 4.92 7.320 6.6 21.8 18 7/26 .048 1.219 1769.6 5.36 7.980 5.9 19.2 18 16/30 .047 1.194 1600.0 4.84 7.200 8.5 21.3 18 19/30 .049 1.245 1900.0 5.75 8.560 5.5 17.9 18 41/34 .047 1.194 1627.3 4.92 7.320 6.4 20.9 18 65/36 .047 1.194 1625.0 4.91 7.310 6.4 21.0 16 Solid .051 1.290 2580.0 7.81 11.600 4.2 13.7 16 7/24 .060 1.524 2828.0 8.56 12.740 3.7 12.0 16 65/34 .059 1.499 2579.9 7.81 11.620 4.0 13.2 16 26/30 .059 1.499 2600.0 7.87 11.710 4.0 13.1 16 19/29 .058 1.473 2426.3 7.35 10.940 4.3 14.0 16 105/36 .059 1.499 2625.0 7.95 11.830 4.0 13.1 14 Solid .064 1.630 4110.0 12.40 18.500 2.6 8.6 14 7/22 .073 1.854 4480.0 13.56 20.180 2.3 7.6 14 19/27 .073 1.854 3830.4 11.59 17.250 2.7 8.9 14 41/30 .073 1.854 4100.0 12.40 18.450 2.5 8.3 14 105/34 .073 1.854 4167.5 12.61 18.770 2.5 8.2 12 Solid .081 2.050 6530.0 19.80 29.50 1.7 5.4 12 7/20 .096 2.438 7168.0 21.69 32.28 1.5 4.8 12 19/25 .093 2.369 6087.6 18.43 27.43 1.7 5.6 12 65/30 .095 2.413 6500.0 19.66 29.26 1.8 5.7 12 165/34 .095 2.413 6548.9 19.82 29.49 1.6 5.2 10 Solid .102 2.590 1038.0 31.40 46.80 1.0 3.4 10 37/26 .115 2.921 9353.6 28.31 41.13 1.1 3.6 10 49/27 .116 2.946 9878.4 29.89 44.48 1.1 3.6 10 105/30 .116 2.946 10530.0 31.76 4.726 0.98 3.2 8 49/25 .147 3.734 15697.0 47.53 70.73 0.67 2.2 8 133/29 .147 3.734 16984.0 51.42 76.52 0.61 2.0 8 655/36 .147 3.734 16625.0 49.58 73.78 0.62 2.0 6 133/27 .184 4.674 26813.0 81.14 120.74 0.47 1.5 6 259/30 .184 4.674 25900.0 78.35 116.59 0.40 1.3 6 1050/36 .184 4.674 26250.0 79.47 118.26 0.39 1.3 4 133/25 .232 5.898 42613.0 129.01 191.98 0.24 0.80 4 259/27 .232 5.898 52214.0 158.02 235.15 0.20 0.66 4 1666/36 .232 5.898 41650.0 126.10 187.65 0.25 0.82 2 133/23 .292 7.417 67936.0 205.62 305.98 0.15 0.50 2 259/26 .292 7.417 65475.0 198.14 294.85 0.16 0.52 2 665/30 .292 7.417 66500.0 201.16 299.35 0.16 0.52 2 2646/36 .292 7.417 66150.0 200.28 298.04 0.16 0.52 1 163195.9 .328 8.331 85133.0 257.60 383.34 0.12 0.40 1 172508.0 .328 8.331 82984.0 251.20 373.81 0.13 0.41 1 817/30 .328 8.331 81700.0 247.10 367.71 0.13 0.42 1 2109/34 .328 8.331 83706.0 253.29 376.92 0.12 0.41 1/0 133/21 .368 9.347 108036.0 327.05 486.68 0.096 0.31 1/0 259/24 .368 9.347 104636.0 316.76 471.37 0.099 0.32 2/0 133/20 .414 10.516 136192.0 412.17 613.35 0.077 0.25 2/0 259/23 .414 10.516 132297.0 400.41 595.85 0.077 0.25 3/0 259/22 .464 11.786 163195.0 501.70 746.58 0.062 0.20 3/0 427/24 .464 11.786 172508.0 522.20 777.09 0.059 0.19 4/0 259/21 .522 13.259 210386.0 638.88 950.72 0.049 0.16 4/0 427/23 .522 13.259 218112.0 660.01 982.16 0.047 0.15 /// http://webstore.iec.ch/preview/info_iec60228%7Bed3.0%7Den_d.pdf Conductor size / Nominal cross sectional area awg / mm² 20 0,519 18 0,823 16 1,31 14 2,08 12 3,31 10 5,26 8 8,37 6 13,3 4 21,2 3 26,7 2 33,6 1 42,4 1/0 53,5 2/0 67,4 3/0 85,0 4/0 107