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kVAR to kW Calculator Online

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The kVAR to kW Calculator is a powerful tool for professionals, educators, and students in the field of electrical engineering. Understanding how this calculator functions, the underlying formula, and the importance of the conversion can be invaluable in various applications. In this article, we'll go in-depth about the working of the kVAR to kW calculator.

What Does the kVAR to kW Calculator Do?

The kVAR to kW Calculator serves to convert reactive power in kilovolt-amperes reactive (kVAR) into real power in kilowatts (kW). This conversion is crucial in the realm of electrical engineering, where the balance and conversion between reactive and real power often define the efficiency and feasibility of electrical systems.

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The Formula

The calculation itself is quite straightforward, requiring just two parameters: the reactive power in kVAR and the power factor. The power factor is a dimensionless number between 0 and 1 that represents the ratio of the real power flowing to the load to the apparent power in the circuit.

The formula used in the kVAR to kW Calculator is:

kW = kVAR * power factor

This equation reflects the relationship between kVAR, kW, and the power factor in an AC electrical power system.

A Practical Example

To help understand the use of the kVAR to kW Calculator, let's consider an example. Suppose you have a system operating with a reactive power of 50 kVAR and a power factor of 0.8.

  1. Input these values into the calculator: Enter 50 into the kVAR field and 0.8 into the power factor field.
  2. Click on the "Calculate kW" button.
  3. The calculator executes the formula: kW = 50 kVAR * 0.8 = 40 kW.
  4. The result (40 kW) is displayed in the kW field.
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The kVAR to kW Calculator proves invaluable in scenarios where electrical engineers need to understand the real power consumed by a system when they know the system's reactive power and power factor.


The kVAR to kW Calculator is a practical tool that simplifies the process of converting reactive power to real power. It aids in understanding the fundamental relationships within an AC power system. By providing a clear, precise calculation, it allows engineers and students to make informed decisions about system design and operation. Knowing how to use this tool and interpret its results is a valuable skill in the field of electrical engineering.

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