How does the Power Factor Calculator work?

Real power (P) in watts Then: Apparent power (S) in VA (volts × amps) Then: Power factor = P ÷ S Then: Cosine of phase angle between voltage and current.

Can you give an example of how to use the Power Factor Calculator?

Example: Input P=1000W, S=1200VA gives a result of PF=0.833.

Is the Power Factor Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Power Factor Calculator?

Our Power Factor Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Uzmanlaşmış

Power Factor Calculator

Real Power (W)

Apparent Power (VA)

Measures reactive vs. real power in AC circuits showing energy efficiency. Power factor <1 wastes electricity and increases utility costs.

Symbol	Name	Unit	Description
P	P value	—	Variable used in the calculation
S	S value	—	Variable used in the calculation

Difficulty:advanced

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Did You Know?

Industrial plants with PF 0.70 pay 20-30% more for electricity than plants with 0.95+ PF.

References

›Power Factor Guide

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