Kilowatts (kW) to amps (A) calculator.
Select current type, enter power in kilowatts,voltage in volts, power factor for AC circuit and press the Calculate button (DC = Direct Current, AC = Alternating Current):
DC kilowatts to amps calculation
The current I in amps (A) is equal to 1000 times the power P in kilowatts (kW), divided by the voltage V in volts (V):
I(A) = 1000 × P(kW) / V(V)
AC single phase kilowatts to amps calculation
The phase current I in amps (A) is equal to 1000 times the power P in kilowatts (kW), divided by the power factor PF times the RMS voltage V in volts (V):
I(A) = 1000 × P(kW) / (PF × V(V) )
AC three phase kilowatts to amps calculation
Calculation with line to line voltage
The phase current I in amps (A) is equal to 1000 times the power P in kilowatts (kW), divided by square root of 3 times the power factor PF times the line to line RMS voltage VL-L in volts (V):
I(A) = 1000 × P(kW) / (√3 × PF × VL-L(V) )
Calculation with line to neutral voltage
The phase current I in amps (A) is equal to 1000 times the power P in kilowatts (kW), divided by 3 times the power factor PF times the line to neutral RMS voltage VL-N in volts (V):
I(A) = 1000 × P(kW) / (3 × PF × VL-N(V) )
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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