Power factor calculator

Power factor calculator

We are offering the Power factor calculator, you can simply calculate the value of power factor, reactive power, apparent power, and the value of correction capacitor’s capacitance.

  1. Select the value of phase number.
  2. Then enter the value of real power measured in kilowatts (kW).
  3. Enter the value of phase current in amps (A).
  4. For the three phase, all you need is to select the voltage type.
  5. The next step is to enter the value of voltage in volts (V).
  6. Then enter the AC frequency measured in Hertz (Hz) which is needed only for the capacitance calculation.
  7. Hit the = button to obtain the power factor.

Select phase #:  
Enter real power in kilowatts: kW
Enter current in amps: A
Enter voltage in volts: V
Enter frequency in hertz: Hz
   
Power factor result:  
Apparent power: kVA
Reactive power: kVAR
Correction capacitor: μF

The value power factor correction capacitor need to be connected parallel to each phase load.

Single phase circuit calculation

You can easily make Power factor calculation here, check now!

PF = |cos φ| = 1000 × P(kW) / (V(V) × I(A))

The Apparent power calculation can be easily calculated as,

|S(kVA)| = V(V) × I(A) / 1000

The Reactive power calculation can be done with this formula,

Q(kVAR) = √(|S(kVA)|2 – P(kW)2)

The factor Power factor correction capacitor’s capacitance calculation:

C(F) = 1000 × Q(kVAR) / (2πf(Hz)×V(V)2)

Three phase circuit calculation

To calculate the three phase with balanced loads, use this formula!

Calculation with line to line voltage

The Power factor calculation,

PF = |cos φ| = 1000 × P(kW) / (√3 × VL-L(V) × I(A))

The Apparent power calculation,

|S(kVA)| = √3 × VL-L(V) × I(A) / 1000

The Reactive power calculation,

Q(kVAR) = √(|S(kVA)|2 – P(kW)2)

The Power factor correction capacitor’s capacitance can be calculated,

C(F) = 1000 × Q(kVAR) / (2πf(Hz)×VL-L(V)2)

Calculation with line to neutral voltage

The Power factor calculation,

PF = |cos φ| = 1000 × P(kW) / (3 × VL-N(V) × I(A))

The Apparent power calculation,

|S(kVA)| = 3 × VL-N(V) × I(A) / 1000

The Reactive power calculation,

Q(kVAR) = √(|S(kVA)|2 – P(kW)2)

The Power factor correction capacitor’s capacitance can be calculated,

C(F) = 1000 × Q(kVAR) / (3×2πf(Hz)×VL-N(V)2)

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