Power Factor Calculator ⚡

How to Use

1. Select Single Phase or Three Phase.
2. Enter kW, Voltage, and Current.
3. Results update automatically: PF, kVA, kVAR and phase angle.

Formulas Used

• Single-phase: kVA = (V × A) / 1000
• Three-phase: kVA = (√3 × V × A) / 1000
• Power Factor: PF = kW / kVA
• kVAR: kVAR = √(kVA² − kW²)
• Phase Angle: φ = arccos(PF)

FAQ

What is power factor?

Power factor shows how effectively electrical power is being converted into useful work output. Lower PF typically means higher current for the same kW.

Why does three-phase use √3?

In a balanced three-phase system, apparent power is based on line-to-line voltage and line current using √3 factor.