Electrical Calculators
AC Power

Power Factor Calculator

Power Factor Calculator. Single-phase, balanced three-phase, apparent power and power-factor calculations. Calculations run in your browser. Entered electrical values are not uploaded to our server.

Inputs
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Calculations run in your browser. Entered electrical values are not uploaded to our server.
ⓘMathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use. Do not work on energized electrical systems unless you are qualified and authorized to do so.

Formula & method

PF = real power / apparent power

Worked example

2300 W / 2500 VA = 0.92

Assumptions & safety boundary

Mathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use. Do not work on energized electrical systems unless you are qualified and authorized to do so.