Enter the current in amps (A), voltage in volts (V), then press the **Calculate** button to get the result in watts (W).

## DC Amps to watts calculation

P_{(W)} =I_{(A)} × V_{(V)}

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

## AC single phase Amps to watts calculation

P_{(W)} = PF × I_{(A)} × V_{(V)}

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

## AC three phase Amps to watts calculation

### Line to line voltage

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

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

### Line to neutral voltage

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

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