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Volts to Watts conversion

Volts (V) to Watts (W) conversion calculator and how to convert.

Enter the voltage in volts, the current in amps and press the Calculate button:

V
A
W

DC Volts to Watts calculation

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

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

Calculation with line to line voltage

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) = √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 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)

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