How to use the Power Factor Calculator
The Formula
Power factor = real power ÷ apparent power: PF = kW ÷ kVA. A PF of 0.8 means 80% of apparent power does useful work.
Practical Example
Low PF increases current draw on feeders and may incur utility penalties. Motors and fluorescent loads often need correction capacitors.
About Power Factor Calculator
Power factor formula
Power factor = real power ÷ apparent power: PF = kW ÷ kVA. A PF of 0.8 means 80% of apparent power does useful work.
Why power factor matters
Low PF increases current draw on feeders and may incur utility penalties. Motors and fluorescent loads often need correction capacitors.
Frequently asked questions
Q: Can PF exceed 1? A: No—enter kW ≤ kVA. Q: Is PF the same as efficiency? A: No; PF is the phase relationship between V and I, not heat loss.