Solve voltage, current, resistance and power
Ohm's Law Calculator
Enter any two electrical quantities to calculate the remaining pair.
Method context
Ohm's law — foundational electrical calculation
The implementation follows the current Swift calculator in the Fire Regs Pro project. It is an estimate for revision and preliminary checking.
Check before use: Confirm the current standard, project specification, manufacturer data, environmental derating and actual site measurements. A browser result is not a design certificate.