Single Phase Power Calculator

Calculate real power, apparent power, reactive power, and power factor for single-phase AC circuits. Comprehensive analysis with power triangle visualization and efficiency metrics.

Single Phase Power Analysis

S (Apparent Power)
VA
P (Real Power)
W
Q (Reactive Power)
VAR
φ
S² = P² + Q²
PF = P / S = cos φ
P = V × I × cos φ

Calculation Method

Voltage, Current & Power Factor

V
A

About Single Phase Power Analysis

Single-phase power analysis is essential for understanding AC circuit behavior, energy efficiency, and power quality in residential and light commercial applications.

Power Types:

  • Real Power (P): Actual power consumed, measured in Watts
  • Reactive Power (Q): Power stored and released, measured in VAR
  • Apparent Power (S): Total power supplied, measured in VA
  • Power Factor: Ratio of real to apparent power

Applications:

  • Residential electrical systems
  • Small motor and appliance analysis
  • Power quality assessment
  • Energy efficiency optimization

Power Factor Importance:

  • Higher power factor means better efficiency
  • Utilities may charge penalties for low power factor
  • Capacitor banks can improve power factor
  • Optimal power factor reduces energy costs