KW to KVA Converter and Formula

Understanding the kw to kva converter is a fundamental aspect of electrical engineering and power management.

In this article, we delve into the essential concepts of power factor and explore the KW to KVA converter, a valuable tool for businesses and industries seeking to optimize their electrical systems and accurately assess their power requirements.

KW to KVA formula

In a three-phase electrical system, the apparent power S (measured in kilovolt-amperes or kVA) is related to the real power (measured in kilowatts or kW) and the power factor (PF) by the following formula:

kw to kva formula 3 phase, KVA=KW/PF


  • is the apparent power in kilovolt-amperes.
  • kW is the real power in kilowatts.
  • PF is the power factor, a dimensionless value between 0 and 1, representing the ratio of real power to apparent power.

To calculate apparent power (kVA) from real power (kW) and power factor (PF), simply divide the real power (kW) by the power factor (PF).

Example KW to KVA:

A load of 50 kw with (PF) of 0.8, convert to (kVA).

As mentioned above S (kVA) = 50 * 0.8 = 40 kVA

Example of Converting KVA to KW:

A load of 100 kva with pf of 0.8, converts from kva to kw.

As mentioned above P (kw) = 100 / 0.8 = 125 kw

What is KVA (Kilo Volt Ampere)

KVA stands for Kilo Volt-Ampere, and it is a unit of measurement for apparent power in an electrical circuit. Apparent power is a complex quantity that combines both real power (measured in kilowatts or kW) and reactive power (measured in kilovars or kVAR).

Here’s a breakdown of these terms:

  1. Kilowatts (kW): Kilowatts represent the real power in an electrical circuit. Real power is the actual power consumed or dissipated in the circuit and is responsible for performing useful work, such as generating heat, producing mechanical motion, or providing light in the case of electrical devices.

  2. Kilovars (kVAR): Kilovars represents the reactive power in an electrical circuit. Reactive power is required to maintain the voltage levels in the circuit and is responsible for establishing and sustaining the electromagnetic fields in inductive loads like motors, transformers, and solenoids. Reactive power does not perform useful work but is necessary for the proper functioning of electrical equipment.

  3. Kilo Volt-Ampere (kVA): KVA is the total apparent power in an electrical circuit. It combines both real power (kW) and reactive power (kVAR) in a complex manner. Apparent power is the vector sum of real and reactive power and represents the total power flowing in the circuit. It is important for sizing electrical equipment, such as transformers and generators, as they need to handle both real and reactive power components.

In summary, KVA (Kilo Volt-Ampere) is a unit of measurement that quantifies the total power (real and reactive) in an electrical circuit.

Understanding KVA is essential for designing and sizing electrical systems to ensure they can handle the total power demands, including both the actual work done (kW) and the power required to maintain voltage levels (kVAR).

Kilo volt-ampere is the power rating unit for generators and transformers.