AC power calculator

  Impedance: Z = ∠ °  =   
  Current: I = ∠ °      
  Voltage: V = ∠ °      
  Power: S = ∠ °  =   
               

The instantaneous electrical AC power formula:

V(V) = I(A) × Z(Ω) = (|I|×|Z|) ∠ (θI + θZ)

Real power P in watts (W): P(W) = V(V) × I(A) × cos φ

power S in volt-amps (VA): S(VA) = V(V) × I(A) = (|V|×|I|) ∠(θV - θI)

calculator.cpu.com.cn provides you helpful and handy calculator resources.
Category Loan Tax Interest Investment Profit & Loss Credit and Debt Planning Algebra Calculus Statistics Matrix Number Plane Geometry Solid Geometry Trigonometry Construction Analytic Geometry Math graphing Color Converter Numeral system Unit Energy Temperature Power Frequency Charge Voltage Lighting Classic Physic Electronic Engineering Chemistry Electrical Date Time Commemorative days Observance days Health and medicine Family and Fun Weather Webmaster tools