# KW Calculator

Amps to kW calculator ►

## DC kilowatts to amps calculation

The current *I* in amps (A) is equal to 1000 times the power *P* in
kilowatts (kW), divided by the voltage *V* in volts (V):

* I*_{(A)} = 1000* *×* P*_{(kW)} / * V*_{(V)}

## AC single phase kilowatts to amps calculation

The phase current *I* in amps (A) is equal to 1000 times the power *P* in
kilowatts (kW), divided by the
power factor *PF* times the RMS voltage *V* in volts (V):

* I*_{(A)} = 1000* *×* P*_{(kW)} / (*PF* × * V*_{(V)}* *
)

## AC three phase kilowatts to amps calculation

#### Calculation with line to line voltage

The phase current *I* in amps (A) is equal to 1000 times the power *P* in
kilowatts (kW), divided by square root of 3 times the
power factor *PF* times the line to line RMS voltage *V*_{L-L} in volts (V):

* I*_{(A)} = 1000* *×* P*_{(kW)} / (*√*3
× * PF* × * V*_{L-L(V)}* *)

#### Calculation with line to neutral voltage

The phase current *I* in amps (A) is equal to 1000 times the power *P* in
kilowatts (kW), divided by 3 times the
power factor *PF* times the line to neutral RMS voltage *V*_{L-N} in volts (V):

* I*_{(A)} = 1000* *×* P*_{(kW)} / (3 × * PF* × * V*_{L-N(V)}* *)

## Typical power factor values

Do not use typical power factor values for accurate calculations.

Device |
Typical power factor |

Resistive load |
1 |

Fluorecent lamp |
0.95 |

Incandescent lamp |
1 |

Induction motor full load |
0.85 |

Induction motor no load |
0.35 |

Resistive oven |
1 |

Synchronous motor |
0.9 |