Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical
Transformer Calculator
Determine the primary current draw of a transformer given its output voltage, output current, and efficiency. Use this when sizing transformers for power supplies, HVAC systems, or industrial equipment.
Fill in the required fields to see your result.
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.
Fill in the required fields to see your result.
Key differences
| Transformer Calculator | Wire Gauge Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 3 |
| Result | Primary Current (A) | Required Wire Gauge (AWG) |
| What it does | Determine the primary current draw of a transformer given its output voltage, output current, and efficiency. Use this when sizing transformers for power supplies, HVAC systems, or industrial equipment. | 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. |