Power Factor Calculator

Find power factor, reactive power, and phase angle from watts and volt-amperes.

Result

Complete the fields to calculate.

Formula and method

FP = W / VA

Important assumptions

Angle and var use a sinusoidal model; nonlinear loads require additional measurement.

Frequently asked questions

Does the calculation run locally?

Yes. Values are processed in your browser and are not sent to a server.

Can I use it for a real installation?

Use it as an educational reference and verify components, tolerances, safety, and applicable code with technical documentation or a qualified person.

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