Three-Phase Power Calculator
Power in kW and kVA for a three-phase supply.
V
A
How it works
Apparent power = √3 × line voltage × line current ÷ 1000. Real power = apparent power × power factor. Use the line-to-line voltage (400 V in most of the world, 208 or 480 V in North America). Example: with the default values, real power comes to 18.84 kW.
FAQ
Is this calculator free?
Yes. No signup is needed and nothing you enter is stored.
Is the result exact?
Results are rounded for display. For financial, medical, or legal decisions, confirm with a professional.
Do my numbers leave my device?
No. The calculation runs in your browser.