Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical
Wire Gauge Calculator
Determines the minimum copper wire gauge (AWG) needed to limit voltage drop in an electrical run. Ideal for electricians, solar installers, and DIYers sizing cables for long runs.
Electrical
Wire Gauge & Ampacity Calculator
Determine the minimum wire cross-sectional area (in mm²) needed to safely carry a given current over a set distance without exceeding your allowed voltage drop. Essential for wiring solar systems, EV chargers, and long cable runs.
Key differences
| Wire Gauge Calculator | Wire Gauge & Ampacity Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 3 | 5 |
| Result | Required Wire Gauge (AWG) | Minimum AWG (AWG) |
| What it does | Determines the minimum copper wire gauge (AWG) needed to limit voltage drop in an electrical run. Ideal for electricians, solar installers, and DIYers sizing cables for long runs. | Determine the minimum wire cross-sectional area (in mm²) needed to safely carry a given current over a set distance without exceeding your allowed voltage drop. Essential for wiring solar systems, EV chargers, and long cable runs. |