How this calculator works
Enter the values for first value, second value and review the units before calculating.
Formula / method
P = V × I × power factor
Worked example
230 V, 4 A and 0.9 power factor produce 828 W.
Assumptions and limitations
The power factor is between 0 and 1 and voltage/current are RMS values.
Single-phase behavior is assumed; three-phase systems need line and phase configuration.