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
- Confirm every input uses the same measurement system your source uses.
- Stress-test edge cases (zero, very small, very large) before trusting a plan.
- If a number feeds a contract, note the formula version you relied on.
FAQ
What should I double-check first in Power Factor Calculator?
Units, time periods, and whether the output matches the question you meant to ask.
Can I use this for regulated or compliance work?
Only if your inputs and definitions are confirmed against applicable standards. Results are informational.
Important Note
Results are informational and should be independently verified for legal, medical, engineering, or financial use.
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