### Power calculator & Power Calculation Formula:

Enter any 2 values to find remaining.

Our power calculator calculates power in watts, current in Amps, the voltage in volts, and resistance in Ohms. Also, here you can calculate DC Power, AC Power and Energy & power calculator.

Just enter the two values of any parameter, to get remaining two. i.e if you enter current and power means, you get resistance and voltage.

### DC Power formula:

Let us consider

*I _{(A)} = current in Amps*

*V _{(V)} = Voltage in Volts*

*P*_{(W)} = Real power in Watts

*R*_{(Ω) }= Resistance in Ohms

We have used for the below formula to find DC voltage, DC current, DC Power and Resistance,

*V*_{(V)} = *I*_{(A)} × *R*_{(Ω)}

*P*_{(W)} = *V*_{(V)} × *I*_{(A)} = *V*^{ 2}_{(V)} / *R*_{(Ω)} = *I* ^{2}_{(A)} × *R*_{(Ω)}

### AC Complex Power formula:

Enter any two values of current or Impedance or voltage and Complex power, press calculate button.

AC single-phase voltage formula

*V*_{(V)} = *I*_{(A)} × *Z*_{(Ω)} = *(|I|*×*|Z*|) ∠ (*θ _{I}* +

*θ*)

_{Z}AC single phase Complex formula,

*S*_{(VA)} = *V*_{(V)} × *I*_{(A)} = *(|V|*×*|I*|) ∠ (*θ _{V}* –

*θ*)

_{I}AC single phase reactive power formula,

*Q*_{(VAR)} = *V*_{(V)} × *I*_{(A)} × sin* φ*

*Power factor formula,*

*PF* = |cos *φ*|