Power Factor Calculator

The Power Factor of an AC power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the circuit and is dimensionless. This calculator calculates the power factor of an AC system.

Enter Irms , Vrms and Real Power to calculate the Power Factor of an AC System

Result

  • Power Factor
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The Power Factor of an AC power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the circuit and is dimensionless.

The “ideal” power factor is one. This is when there is no reactive power through the circuit, and hence apparent power (kVA) is equal to real power (kW). A load with a power factor of 1 is the most efficient loading of the supply.

The power factor is 1 for the purely resistive circuit because the reactive power equals zero.

The power factor is zero for the purely inductive circuit and capacitive circuit because real power equals zero.

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