ClueLuma

Single-phase real power calculator

Include power factor when using RMS voltage and current for single-phase real power.

P=V×I×PFP = V \times I \times \mathrm{PF}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

decimal
V
A
W

Worked example

Given

  • PF\mathrm{PF} = 0.85 decimal
  • VV = 100 V
  • II = 0.85 A
P=100×0.85×0.85=72.25P = 100 \times 0.85 \times 0.85 = 72.25

Symbols and units

SymbolMeaningUnit
PPreal powerW
PF\mathrm{PF}power factordecimal
VVvoltageV
IIcurrentA

Related calculators

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.