Amps to kW – Ampere (A) to Kilowatts (kW) Calculator.

Are you looking for the calculation behind this calculator? You can find it below. So, just keep reading the post.

First of all, we will discuss the direct current(DC) calculation.

## Direct Current(DC) Amps to kW Calculation

**P _{(kW)} = I_{(A)} x V_{(v)} / 1000**

Here,

P_{(kW)} = Power(P) in kilowatts(kW),

I_{(A)} = Current(I) in amps(A),

V_{(v)} = Voltage(V) in volts(v)

Therefore, the definition will be: The power(P) in kilowatts(kW) is equal to the current(I) in Amperes(A) multiply with voltage(V) in volts(v) and whole result divide by 1000.

Now, let’s discuss AC single-phase and three-phase amps to kilowatts calculation.

#### AC single-phase Amps to kW Calculation

**P _{(kW)} = PF x I_{(A)} x V_{(v)} / 1000**

In this formula, you can see it looks similar to the DC formula. But the only new thing is the Power Factor(PF). So, multiply the power factor with the current and voltage and then divide the whole result by 1000.

#### AC three-phase Amps to kilowatts Calculation

Most importantly, there are two types of voltage calculations that occur in AC three-phase. You can find it below.

##### 1) Calculation with a line to line voltage

Similarly, there is just one addition as compared to the AC single-phase formula. That is the square root of 3. So, the formula will be: the power (P) is equal to the square root of 3 into Power Factor(PF) into Current(I) into Voltage(V_{L-L}) divide by 1000.

**P _{(kW)} = √3 x PF x I_{(A)} x V_{L-L(v)} / 1000**

##### 2) Calculation with a line to neutral voltage

In this formula, there is just one change. That is 3. Therefore the line to neutral voltage calculation formula will be: the power (P) is equal to the 3 into Power Factor(PF) into Current(I) into Voltage(V_{L-N}) divide by 1000.

**P _{(kW)} = 3 x PF x I_{(A)} x V_{L-N(v)} / 1000**

### Typical Power Factor(PF) Values

**Note:** Please don’t use these values for accurate calculations.

Device | Typical PF |
---|---|

Resistive load | 1 |

Incandescent lamp | 1 |

Resistive oven | 1 |

Fluorescent lamp | 0.95 |

Synchronous motor | 0.9 |

Induction motor full load | 0.85 |

Induction motor no load | 0.35 |