## DC Amps to kW calculation formula

P_{(kW)} =I_{(A)} × V_{(V)} / 1000

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

So,

*kW = A x V / 1000**kilowatts = amps x volts / 1000*

**For example:**

*Phase current (I) = 2,5A**Voltage (V) = 110V*

*Power (P) = 2,5A x 110V / 1000 = 0,275kW*

## AC single phase Amps to kW calculation formula

P_{(kW)} = PF × I_{(A)} × V_{(V)} / 1000

The real power **P** in kilowatts (kW) 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), divided by 1000.

So,

*kW = PF x A x V / 1000**kilowatts = PF x amps x volts / 1000*

**For example:**

*Phase current (I) = 2,5A**Voltage (V) = 110V**PF = 0,7*

*Power (P) = 0,7 x 2,5A x 110V / 1000 = 0,1925kW*

## AC three phase Amps to kW calculation formula

### Line to line voltage

P_{(kW)} = √3 × PF × I_{(A)} × V_{L-L (V)} / 1000

The real power **P** in kilowatts (kW) 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), divided by 1000.

So,

*kW = √3 x PF x A x V / 1000**kilowatts = √3 x PF x amps x volts / 1000*

**For example:**

*Phase current (I) = 2,5A**Voltage (V) = 110V**PF = 0,7*

*Power (P) = √3 x 0,7 x 2,5A x 110V / 1000 = 0,333kW*

### Line to neutral voltage

P_{(kW)} = 3 × PF × I_{(A)} × V_{L-N (V)} / 1000

The real power **P** in kilowatts (kW) 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), divided by 1000.

So,

*kW = 3 x PF x A x V / 1000**kilowatts = 3 x PF x amps x volts / 1000*

**For example:**

*Phase current (I) = 2,5A**Voltage (V) = 110V**PF = 0,7*

*Power (P) = 3 x 0,7 x 2,5A x 110V / 1000 = 0,578kW*