Electrical Power Calculator (P=IV)
Physics & EngineeringCalculate electrical power from current and voltage.
Power
The electrical power consumed, in watts, calculated as current times voltage (P = IV).
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Odeh Ahwal0people find this calculator helpful
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Physics & Engineering calculators
Frequently Asked Questions
What is the difference between watts, amps, and volts?
Volts measure electrical potential, amps measure current flow rate, and watts measure power, the rate of energy use, calculated as the product of current and voltage.
Why do household appliances list a wattage rating?
Wattage rating tells you how much power an appliance consumes during operation, which determines both its electricity cost over time and whether it is compatible with a given circuit amperage capacity.
Does this formula work for AC circuits the same as DC?
For simple resistive loads this formula applies similarly to both, but real AC circuits often have a power factor due to reactive loads, which means apparent power and true power consumption can differ from this simplified calculation.
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