0000 (4/0)
- Input
- 0000
- Expected output
- 11.684 / 107 / 0.1608
The thickest: 211.6 kcmil.
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awg wire gauge chart
This page opens the tool on the Chart tab, with all 44 gauges from 0000 to 40 AWG on one screen: diameter in millimeters and inches, area in mm² and kcmil and copper resistance per kilometer and per thousand feet. The values come from the definition's formula and not from a rounded table, and the Copy button takes everything to a spreadsheet, with columns separated by tabs.
The thickest: 211.6 kcmil.
About 21 mm² of cross-section.
Reference row of the published table.
Half a square millimeter of copper.
Very thin wire.
The thinnest in the chart.
12 AWG has a cross-section of 3.31 mm² and a diameter of 2.053 mm. Copper resistance is about 5.21 Ω per kilometer at 20 °C.
The thickest is 0000 (4/0), at 11.684 mm and 107 mm². The thinnest in the chart is 40 AWG, at 0.0799 mm. The scale continues beyond 40, but out of common use.
No. The current a wire can carry depends on the code, the insulation, the temperature and the installation, and is not a property of the gauge alone. The chart gives the conductor's physical quantities.
Take the gauge's Ω/km, multiply by the length in km and by the current. For 10 m of 14 AWG at 5 A: 8.286 × 0.01 × 5 = 0.414 V on the one-way run.
Yes. The Copy chart button takes all 44 rows, with tab-separated columns, which most spreadsheets split into columns on paste.
From the definition's formula, d = 0.127 mm × 92^((36 − n) ÷ 39), and from copper's resistivity at 100% IACS, 58.0 MS/m, at 20 °C. No values are typed by hand, so the columns stay consistent with each other.
| AWG | Diameter (mm) | Diameter (in) | Area (mm²) | kcmil | Ω/km | Ω/kft |
|---|---|---|---|---|---|---|
| 0000 (4/0) | 11.68 | 0.46 | 107.2 | 211.6 | 0.1608 | 0.04901 |
| 000 (3/0) | 10.4 | 0.4096 | 85.03 | 167.8 | 0.2028 | 0.0618 |
| 00 (2/0) | 9.266 | 0.3648 | 67.43 | 133.1 | 0.2557 | 0.07793 |
| 0 (1/0) | 8.251 | 0.3249 | 53.48 | 105.5 | 0.3224 | 0.09827 |
| 1 | 7.348 | 0.2893 | 42.41 | 83.69 | 0.4066 | 0.1239 |
| 2 | 6.544 | 0.2576 | 33.63 | 66.37 | 0.5127 | 0.1563 |
| 3 | 5.827 | 0.2294 | 26.67 | 52.63 | 0.6465 | 0.197 |
| 4 | 5.189 | 0.2043 | 21.15 | 41.74 | 0.8152 | 0.2485 |
| 5 | 4.621 | 0.1819 | 16.77 | 33.1 | 1.028 | 0.3133 |
| 6 | 4.115 | 0.162 | 13.3 | 26.25 | 1.296 | 0.3951 |
| 7 | 3.665 | 0.1443 | 10.55 | 20.82 | 1.634 | 0.4982 |
| 8 | 3.264 | 0.1285 | 8.366 | 16.51 | 2.061 | 0.6282 |
| 9 | 2.906 | 0.1144 | 6.634 | 13.09 | 2.599 | 0.7921 |
| 10 | 2.588 | 0.1019 | 5.261 | 10.38 | 3.277 | 0.9989 |
| 11 | 2.305 | 0.09074 | 4.172 | 8.234 | 4.132 | 1.26 |
| 12 | 2.053 | 0.08081 | 3.309 | 6.53 | 5.211 | 1.588 |
| 13 | 1.828 | 0.07196 | 2.624 | 5.178 | 6.571 | 2.003 |
| 14 | 1.628 | 0.06408 | 2.081 | 4.107 | 8.286 | 2.525 |
| 15 | 1.45 | 0.05707 | 1.65 | 3.257 | 10.45 | 3.184 |
| 16 | 1.291 | 0.05082 | 1.309 | 2.583 | 13.17 | 4.016 |
| 17 | 1.15 | 0.04526 | 1.038 | 2.048 | 16.61 | 5.064 |
| 18 | 1.024 | 0.0403 | 0.823 | 1.624 | 20.95 | 6.385 |
| 19 | 0.9116 | 0.03589 | 0.6527 | 1.288 | 26.42 | 8.051 |
| 20 | 0.8118 | 0.03196 | 0.5176 | 1.022 | 33.31 | 10.15 |
| 21 | 0.7229 | 0.02846 | 0.4105 | 0.8101 | 42 | 12.8 |
| 22 | 0.6438 | 0.02535 | 0.3255 | 0.6424 | 52.96 | 16.14 |
| 23 | 0.5733 | 0.02257 | 0.2582 | 0.5095 | 66.79 | 20.36 |
| 24 | 0.5106 | 0.0201 | 0.2047 | 0.404 | 84.22 | 25.67 |
| 25 | 0.4547 | 0.0179 | 0.1624 | 0.3204 | 106.2 | 32.37 |
| 26 | 0.4049 | 0.01594 | 0.1288 | 0.2541 | 133.9 | 40.81 |
| 27 | 0.3606 | 0.0142 | 0.1021 | 0.2015 | 168.9 | 51.47 |
| 28 | 0.3211 | 0.01264 | 0.08098 | 0.1598 | 212.9 | 64.9 |
| 29 | 0.2859 | 0.01126 | 0.06422 | 0.1267 | 268.5 | 81.84 |
| 30 | 0.2546 | 0.01003 | 0.05093 | 0.1005 | 338.6 | 103.2 |
| 31 | 0.2268 | 0.008928 | 0.04039 | 0.0797 | 426.9 | 130.1 |
| 32 | 0.2019 | 0.00795 | 0.03203 | 0.06321 | 538.3 | 164.1 |
| 33 | 0.1798 | 0.00708 | 0.0254 | 0.05013 | 678.8 | 206.9 |
| 34 | 0.1601 | 0.006305 | 0.02014 | 0.03975 | 856 | 260.9 |
| 35 | 0.1426 | 0.005615 | 0.01597 | 0.03152 | 1,079 | 329 |
| 36 | 0.127 | 0.005 | 0.01267 | 0.025 | 1,361 | 414.8 |
| 37 | 0.1131 | 0.004453 | 0.01005 | 0.01983 | 1,716 | 523.1 |
| 38 | 0.1007 | 0.003965 | 0.007967 | 0.01572 | 2,164 | 659.6 |
| 39 | 0.08969 | 0.003531 | 0.006318 | 0.01247 | 2,729 | 831.8 |
| 40 | 0.07987 | 0.003145 | 0.00501 | 0.009888 | 3,441 | 1,049 |
Solid copper at 20 °C with a conductivity of 58.0 MS/m (100% IACS). Diameter from the formula 0.127 mm × 92^((36 − n) ÷ 39). Values are rounded for display; the math is exact.
The math runs in your browser; no value is sent to a server. The tool does not give current capacity (ampacity), which depends on the code and the installation.