Volts to watts calculator

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Volts (V) to watts (W) calculator.

Enter the voltage in volts, current in amps and press the Calculate button to get thepower in watts:

Select current type:  
Enter voltage in volts: V
Enter current in amps: A
   
Power result in watts: W

 

Watts to volts calculator ►

DC volts to watts calculation formula

The power P in watts (W) is equal to the voltage V in volts (V), times the current I in amps (A):

P(W) = V(V) × I(A)

 

AC single phase volts to watts calculation formula

The power P in watts (W) is equal to the power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V):

P(W) = PF × I(A) × V(V)

 

AC three phase volts to watts calculation formula

Calculation with line to line voltage

The power P in watts (W) is equal to square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage VL-L in volts (V):

P(W) = √3 × PF × I(A) × VL-L(V)

            ≈ 1.732 × PF × I(A) × VL-L(V)

 

Calculation with line to neutral voltage

The power P in watts (W) is equal to 3 times the power factor PF times the phase current I in amps (A), times the line to neutral RMS voltage VL-N in volts (V):

P(W) = 3 × PF × I(A) × VL-N(V)

 

 

Volts to watts calculation ►

 

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