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 .

kW to VA calculation formula:
formula kW a VA

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

How to convert kW to VA in only 1 step.

kw to va how to convert

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: 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 Un-improved Power Factor by Industry:

IndustryPower Factor
Auto Parts0.75-0.80
Coal Mine0.65-0.80
Machine Manufacturing0.60-0.65
Metalworking 0.65-0.70
Office Building0.80-0.90
Oil field Pumping0.40-0.60
Paint Manufacturing0.65-0.70
Steel Works0.65-0.80
Tool, dies, jigs industry0.65-0.75

Typical power factor of common household electronics:

Electronics devicePower Factor
Magnavox Projection TV – standby0,37
Samsung 70″ 3D Bluray0,48
Digital Picture Frame0,52
ViewSonic Monitor0,5
Dell Monitor0,55
Magnavox Projection TV0,58
Digital Picture Frame0,6
Digital Picture Frame0,62
Digital Picture Frame0,65
Philips 52″ Projection TV0,65
Digital Picture Frame0,73
Xbox Kinect0,75
Xbox 3600,78
Sharp Aquos 3D TV0,95
PS3 Move0,98
Playstation 30,99
Element 41″ Plasma TV0,99
Current large, flat-screen television0,96
Windows-mount air conditioner0,9
Legacy CRT-Based color television0,7
Legacy flat panel computer monitor0,64
While-LED lighting fixture0,61
Legacy laptop power adapter0,55
Laser Printer0,5
Incandescent lamps1
Fluorescent lamps (uncompensated)0,5
Fluorescent lamps (compensated)0,93
Discharge lamps0,4-0,6

Typical Motor Power Factors:

PowerSpeedPower Factor
(hp)(rpm)1/2 load3/4 loadfull load
0 – 518000.720.820.84
5 – 2018000.740.840.86
20 – 10018000.790.860.89
100 – 30018000.810.880.91

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

kW to VA conversion table-chart:

kWPower FactorVA
1 kW0,75 P.f1333,3 VA
2 kW0,75 P.f2666,6 VA
3 kW0,75 P.f4000 VA
4 kW0,75 P.f5333,3 VA
5 kW0,75 P.f6666,6 VA
6 kW0,75 P.f8000 VA
7 kW0,75 P.f9333,33 VA
8 kW0,75 P.f10666,6 VA
9 kW0,75 P.f12000 VA
10 kW0,8 P.f12500 VA
20 kW0,8 P.f25000 VA
30 kW0,8 P.f37500 VA
40 kW0,8 P.f50000 VA
50 kW0,8 P.f62500 VA
60 kW0,8 P.f75000 VA
70 kW0,8 P.f87500 VA
80 kW0,8 P.f100000 VA
90 kW0,8 P.f112500 VA
100 kW0,85 P.f117647,05 VA
200 kW0,85 P.f235294,11 VA
300 kW0,85 P.f352941,17 VA
400 kW0,85 P.f470588,2 VA
500 kW0,85 P.f588235,2 VA
600 kW0,85 P.f705882,35 VA
700 kW0,85 P.f823529,4 VA
800 kW0,85 P.f941176,4 VA
900 kW0,85 P.f1058823,52 VA
1000 kW0,9 P.f1111111,11 VA
2000 kW0,9 P.f2222222,22 VA
3000 kW0,9 P.f3333333,3 VA
4000 kW0,9 P.f4444444,4 VA
5000 kW0,9 P.f5555555,5 VA
6000 kW0,9 P.f6666666,6 VA
7000 kW0,9 P.f7777777,77 VA
8000 kW0,9 P.f8888888,88 VA
9000 kW0,9 P.f10000000 VA
10000 kW0,95 P.f10526315,7 VA
20000 kW0,95 P.f21052631,57 VA
30000 kW0,95 P.f31578947,3 VA
40000 kW0,95 P.f42105263,1 VA
50000 kW0,95 P.f52631578,94 VA
60000 kW0,95 P.f63157894,73 VA
70000 kW0,95 P.f73684210,52 VA
80000 kW0,95 P.f84210526,31 VA
90000 kW0,95 P.f94736842,1 VA