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Three-Phase Power Calculator

Calculate the real power of a balanced three-phase AC system from line voltage, line current and power factor (P = √3 × V × I × PF).

Real power
6,235.38W
In kilowatts
6.235 kW

Formula: P = √3 × VL × IL × PF

About Three-Phase Power Calculator

Three-Phase Power Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate the real power of a balanced three-phase AC system from line voltage, line current and power factor (P = √3 × V × I × PF).

The calculation uses the standard formula P = √3 × VL × IL × PF and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.

Three-phase power is standard for industrial motors because it delivers constant, rather than pulsating, power to the load.

Frequently Asked Questions

Is Three-Phase Power Calculator free to use?

Yes. Three-Phase Power Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.

How accurate is this calculator?

The calculator applies the standard formula (P = √3 × VL × IL × PF) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.