Enter the power in watts (W), current in amps (A), select power factor (PF) from 0 to 1 with a 0.1 step (for AC), then press the **Calculate** button to get the result in volts (V).

## DC Watts to volts calculation

V_{(V)} = P_{(W)} / I_{(A)}

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

## AC single phase watts to volts calculation

V_{(V)} = P_{(W)} / (PF × I_{(A)})

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

## AC three phase watts to volts calculation

V_{L-L(V)} = P_{(W)} / (√3 × PF × I_{(A)})

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

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