⚡ CircuitSecrets
Power Factor Correction Calculator
Calculate required kVAR, capacitor bank sizing, power triangle, energy savings & cost reduction from PFC — single & three phase
kVAR Required
Capacitor Bank
Power Triangle
Energy Savings
3-Phase
Cost Reduction
PFC Sizing
Input Parameters
Power & Phase
Power Factor
Cost & Tariff
PFC Result
Correction Analysis
► Formulas
Power Factor Correction Method
kVAR = kW × (tan φ₁ − tan φ₂)
φ = arccos(power factor)
kVA₁ = kW / PF₁ kVA₂ = kW / PF₂
C (1-ph) = kVAR×10⁶ / (2π×f×V²)
C (3-ph Δ) = kVAR×10⁶ / (3×2π×f×VL²)
C (3-ph Y) = kVAR×10⁶ / (2π×f×(VL/√3)²) / 3
kVAR reduction = kVAR₁ − kVAR₂
⚠ Note: Capacitor values are theoretical. Standard capacitor banks are available in discrete steps (e.g. 5, 10, 15, 20, 25, 30, 50 kVAR). Choose the nearest standard size. Always include protection (fuses, contactors) in the capacitor bank design.
