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Three-Phase Power from Line Voltage, Current, and Power Factor Calculator

P = √3 · V_L · I_L · PF — balanced 3-phase apparent/real power.

Calculates real power P = √3·V_L·I_L·PF, reactive power Q = √3·V_L·I_L·sin(arccos PF), apparent power S = √3·V_L·I_L, and phase voltage.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

V
A

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

P = √3·V_L·I_L·cos φ

In depth

Calculates real power P = √3·V_L·I_L·PF, reactive power Q = √3·V_L·I_L·sin(arccos PF), apparent power S = √3·V_L·I_L, and phase voltage.