Power Factor Calculator
Power factor is a key indicator of how efficiently electrical power is being used. A low power factor means wasted energy and higher electricity bills.
The Power Factor Calculator helps you analyze active (kW), reactive (kVAR), and apparent (kVA) power — providing instant insight into system performance and energy efficiency.
This tool is essential for electrical engineers, maintenance teams, and students learning about AC power systems.
Reactive & Active Power Analysis Tool
Enter Active Power (kW) and Reactive Power (kVAR).
Click Calculate Power Factor.
The calculator instantly displays:
Apparent Power (kVA)
Power Factor (cos φ)
Phase Angle (φ)
Efficiency suggestion if PF is low.
🧭 How to Use
FAQ
Q1. What is Power Factor?
A. Power factor is the ratio of active power (kW) to apparent power (kVA). It shows how effectively electrical energy is converted into useful work.
Q2. What causes low power factor?
A. Inductive loads such as motors, transformers, and fluorescent lamps cause lagging reactive power, reducing the power factor.
Q3. Why is improving power factor important?
A. A higher power factor reduces current draw, energy losses, and utility penalties — improving overall efficiency.
Q4. How can I improve low power factor?
A. By adding capacitor banks or power factor correction units to offset the lagging reactive power.