Amps-to-Kilowatts-Calculator

Select current type:	DC AC - Single phase AC - Three phase
Enter current in amps:		A
Select voltage type:	Line to line voltage Line to neutral voltage
Enter voltage in volts:		V
Enter power factor:
Power result in kilowatts:		kW

* Use e for scientific notation. E.g: 5e3, 4e-8, 1.45e12

kW to amps calculator ►

DC amps to kilowatts calculation

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

P_(kW) = I_(A) × V_(V) / 1000

AC single phase amps to kilowatts calculation

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

P_(kW) = PF × I_(A) × V_(V) / 1000

AC three phase amps to kilowatts calculation

Calculation with line to line voltage

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

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

Calculation with line to neutral voltage

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

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

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

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