Power Factor Calculator
Calculate power factor, real power, apparent power, and reactive power for AC electrical problems.
Connect real, apparent, and reactive power values in AC circuits.
Power Factor Calculator
Calculate power factor and recommend correction
Formula:
PF = P / S = cos(φ)
Q = √(S² - P²)
P is active power (kW), S is apparent power (kVA), Q is reactive power (kVAR)
💡 Ideal PF=1.0, industrial recommendation ≥0.95
💡 Low PF increases electricity cost and line losses
Frequently asked questions
What is power factor?
Power factor is the ratio of real power to apparent power in an AC circuit.
Why does low power factor matter?
Low power factor means more current is needed for the same real power, increasing losses and equipment loading.
Can this calculate kVAR?
It helps relate real, apparent, and reactive power when enough values are known.
Is correction automatic?
No. Correction equipment should be designed and verified by qualified professionals.