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Power Factor Calculator

Power Factor Calculator

Calculate power parameters in AC circuits
A
Power Triangle ▼
VAR
VA
Unitless
R, X, and Z ▼
Ω
Ω
Ω

Power Factor Calculation Guide

  • True Power (P): Actual power consumed by the circuit (in Watts)
  • Reactive Power (Q): Power stored and released by inductive/capacitive elements (in VAR)
  • Apparent Power (S): Vector sum of true and reactive power (in VA), calculated as: S = √(P² + Q²)
  • Power Factor (PF): Ratio of true power to apparent power: PF = P / S
  • Phase Angle (θ): Angle between voltage and current waveforms: θ = arccos(PF)
  • In impedance calculations: Z = √(R² + X²) where R is resistance, X is reactance, and Z is impedance

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