AC Power Measurement Calculator

Calculate real, reactive, and apparent power from voltage and current measurements with phase angle.

Measured RMS voltage.
V
Measured RMS current.
A
Angle between voltage and current.
°

Results

Apparent Power (S)-VA
Real Power (P)-W
Reactive Power (Q)-VAR
Power Factor-
References: IEEE Std 1459; Nilsson Electric Circuits; IEEE Std 100