Is this Power Factor Calculator free to use?

Yes, Power Factor Calculator is 100% free to use online with no installation or account required.

How do I use the Power Factor Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

Power Factor Calculator — Free Online Tool

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Calculate power factor from real power and apparent power

Formula: PF = P / S = cos(θ)
Where P is Real Power (Watts), S is Apparent Power (VA), and θ is the phase angle.

Electrical Parameters

Real Power (Watts)

Apparent Power (VA)

⚠️ For electrical engineering and physics education reference only. Power factor must be between 0 and 1.

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