Power from Current and Voltage

Output: Press calculate

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Formula:P = current × voltage

Introduction to Power Calculation

Power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt (W). One watt is equivalent to one joule per second. In electrical systems, power (P) can be calculated by multiplying the current (I) in amperes with the voltage (V) in volts.

Parameter usage:

Example valid values:


Data validation

Both the current and voltage should be greater than zero to determine a positive power output.


This calculator helps to determine the electrical power output when current and voltage are known, using the formula P = I × V.

Tags: Electrical, Power, Current, Voltage, Watts, Amperes, Volts