Power Factor Calculator
Calculate power factor and apparent power in AC electrical systems.
Power Factor Calculator
Calculate power factor, apparent power, real power, and reactive power in AC electrical systems.
Power Factor
Phase Angle
Power Triangle
Power Factor Explained
- • Real Power (P): Actual power consumed by the load
- • Apparent Power (S): Total power supplied by the source
- • Reactive Power (Q): Power stored and returned by reactive elements
- • Power Factor: Ratio of real power to apparent power
Power Factor Quality
- • 0.95-1.00: Excellent
- • 0.85-0.94: Good
- • 0.70-0.84: Fair
- • 0.00-0.69: Poor
About This Calculator
Measure power factor and understand how efficiently electrical load converts supplied power into useful work.
Formula
Power factor = real power (kW) / apparent power (kVA).
Example
Enter real and apparent power values to evaluate if correction may be beneficial.
When to Use
- Industrial load assessment
- Utility penalty reduction analysis
- Electrical system audits
Best Practices
- Validate units and assumptions before interpreting output.
- Compare at least two scenarios to avoid single-point bias.
- Use results as decision support, then cross-check critical outcomes.
FAQ
Can I rely on Power Factor Calculator for important decisions?
Use it as a fast and consistent estimator, then verify inputs and assumptions for high-stakes decisions.
Why might my result differ from another tool?
Different tools may use different rounding rules, defaults, or formula variants. Align assumptions before comparing.
Important Note
Results are informational and should be independently verified for legal, medical, engineering, or financial use.
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