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Electrical calculator

Power Factor Calculator

Calculate power factor, reactive power, and correction capacitance from voltage, current, and real power.

Power factor PF = P(kW) ÷ S(kVA)
Reactive power Q = √(S² − P²)
Electrical calculator

Power Factor Calculator

Instant result
Result
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Enter values to calculate.

Inputs—
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How to use

Follow these steps for a clear answer.

1

Enter the known values

Fill in the fields for your circuit or equipment.

2

Choose the conversion direction

Use the tabs when both directions are available.

3

Read the result

The result updates instantly as you type.

Frequently asked questions

Key distinctions behind the calculation.

How does the Power Factor calculation work?

It uses the formula PF = P(kW) ÷ S(kVA).