Wire Gauge Calculator
Complete electrical wire size calculator with AWG conversion, voltage drop, and ampacity
AWG Wire Gauge Reference Chart
| AWG | Diameter (mm) | Area (mm²) | Max Current (A) | Resistance (Ω/km) |
|---|---|---|---|---|
| 0 | 8.25 | 53.5 | 125 | 0.33 |
| 2 | 6.54 | 33.6 | 95 | 0.52 |
| 4 | 5.19 | 21.2 | 70 | 0.83 |
| 6 | 4.11 | 13.3 | 55 | 1.32 |
| 8 | 3.26 | 8.37 | 40 | 2.10 |
| 10 | 2.59 | 5.26 | 30 | 3.34 |
| 12 | 2.05 | 3.31 | 20 | 5.31 |
| 14 | 1.63 | 2.08 | 15 | 8.45 |
| 16 | 1.29 | 1.31 | 10 | 13.4 |
| 18 | 1.02 | 0.82 | 7 | 21.4 |
About Wire Gauge Calculations
Wire gauge is a measure of the cross-sectional area of a wire, which affects its current-carrying capacity and electrical resistance. In the United States, the American Wire Gauge (AWG) system is used, while metric measurements (mm²) are common in most other countries.
Always consult local electrical codes and a licensed electrician when planning electrical installations. Wire sizing depends on multiple factors beyond the calculations provided here.