# kW to VA – How to converter, calculator, formula and chart

Converting from kW to VA is easier with this automatic calculation tool with formulas and step by step explanation.

In addition to the calculator, descriptive examples are shown , the main equivalences in a table and finally the most common power factors are presented .

Table content:

## kW to VA calculation formula:

• kW=One kilowatt is equal to 1000 watts.
• VA=Volt-Ampere.
• P.F=Power factor

## Step 1.

Divide the kW between the power factor (FP) and then multiply the result by 1000. See the common power factors on this website: http://calculatorsconversion.com/en/the-power-factor-values-% E2% 80% 8B% E2% 80% 8Bfor-the-most-common/

For example, if you have a microwave that consumes 1kW and has a power factor of 0.9, then you must divide 1kW by 0.9 to get 1.11kVA.

Then divide step 1 by 1000, the result will be VA. ((1kW /0.9)x1000 = 1111VA).

## Definition P.F, S (VA) and P (kW):

kW: is Working Power (also called Actual Power or Active Power or Real Power). It is the power that actually powers the equipment and performs useful work.

The real power in watts is the power that performs work or generates heat. Power in watts is the rate at which energy is consumed (or generated). One watt is one joule (energy) per second (1 W = 1 J/s).

Resistive devices or loads such as heaters, incandescent lamps are rated in kW.

VA: A Volt-ampere, commonly referred to as a VA, is commonly used as a unit of power in obtaining the electrical capacity of circuit breakers, uninterrupted power supplies and wirings.

VA is larger than Watts because loads are inductive such as motors, discharge lighting, reactors and more current is required to keep the magnetic field energized than is -turned into heat (Watts).

Inductive devices or loads such,. as tansformers and motors having power factor less than 1.0 are generally rated in VA.

P.F: Power factor is the ratio of working power to apparent power. It measures how effectively electrical power is being used. A high power factor signals efficient utilization of electrical power, while a low power factor indicates poor utilization of electrical power.

Power Factor is the cosine of the phase angle between current and voltage.
Power Factor is the ratio of true power to apparent power.

## Typical Motor Power Factors:

Reference // Power Factor in Electrical Energy Management-A. Bhatia, B.E.-2012
Power Factor Requirements for Electronic Loads in California- Brian Fortenbery,2014
http://www.engineeringtoolbox.com

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