# Watts to volts free online calculator

Watts (W) to volts (V) calculator.

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

W
A
V

Volts to watts calculator »

## DC watts to volts calculation

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

V(V) = P(W) / I(A)

## AC single phase watts to volts calculation

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

V(V) = P(W) / (PF × I(A) )

## AC three phase watts to volts calculation

#### Calculation with line to line voltage

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

VL-L(V) = P(W) / (3 × PF × I(A) ) ≈ P(W) / (1.732 × PF × I(A) )

#### Calculation with line to neutral voltage

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

VL-N(V) = P(W) / (3 × PF × I(A) )

Volts to watts calculator »

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