Amps to Kilowatts Calculator

Amps (A) to kilowatts (kW) calculator.

Current type DC AC - Single phase AC - Three phase

Current (amps)

mA A kA

Voltage type Line to line voltage Line to neutral voltage

Voltage (volts)

mV V kV

Power factor (≤1)

= Calculate × Reset Swap

Power (kilowatts)

kW

Power (watts)

W

Power (milliwatts)

mW

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

Calculate the equivalent kilowatt (kW) value for any given amperage (A) using our precise amps to kilowatts calculator. Simply enter the current in amps and click the button to get the instant kW conversion.

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

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Calculation with line to line voltage

The power P in kilowatts (kW) is equal to the 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
Fluorescent 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