# Volts to Watts Calculator

Volts (V) to watts (W) calculator.

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

 Select current type: DC AC - Single phase AC - Three phase Enter voltage in volts: V Enter current in amps: A Power result in watts: W

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## 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) Ã— 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 Ã— I(A) Ã— 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) = âˆš3 Ã— PF Ã— I(A) Ã— VL-L(V)

â‰ˆ 1.732 Ã— PF Ã— I(A) Ã— 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 Ã— PF Ã— I(A) Ã— VL-N(V)