Ohm's Law Power
Compute power in watts using voltage and current values.
CalcSimpler Examples
- 120 V and 2 A ⇒ 240 W
- 12 V and 1.5 A ⇒ 18 W
FAQ
What is electrical power?
It's the rate of energy use, equal to voltage times current.
Can I input milliamps?
Convert milliamps to amps before entering.
Does this apply to AC?
It provides an approximation for resistive AC loads.
Is the result in watts?
Yes, the calculator outputs watts.
Additional Information
- Power (P) equals voltage multiplied by current: P = V × I.
- Ensure components are rated for the calculated wattage to avoid overheating.
- For AC circuits with phase shift, use RMS values and consider power factor.
CalcSimpler