How to convert Amps to kW

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.

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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) × VL-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 VL-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) × VL-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 VL-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

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