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:
- 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.
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 Un-improved Power Factor by Industry:
| Industry | Power Factor |
| Auto Parts | 0.75-0.80 |
| Brewery | 0.75-0.80 |
| Cement | 0.80-0.85 |
| Chemical | 0.65-0.75 |
| Coal Mine | 0.65-0.80 |
| Clothing | 0.35-0.60 |
| Electroplating | 0.65-0.70 |
| Foundry | 0.75-0.80 |
| Forging | 0.70-0.80 |
| Hospital | 0.75-0.80 |
| Machine Manufacturing | 0.60-0.65 |
| Metalworking | 0.65-0.70 |
| Office Building | 0.80-0.90 |
| Oil field Pumping | 0.40-0.60 |
| Paint Manufacturing | 0.65-0.70 |
| Plastic | 0.75-0.80 |
| Stamping | 0.60-0.70 |
| Steel Works | 0.65-0.80 |
| Tool, dies, jigs industry | 0.65-0.75 |
Typical power factor of common household electronics:
| Electronics device | Power Factor |
| Magnavox Projection TV – standby | 0,37 |
| Samsung 70″ 3D Bluray | 0,48 |
| Digital Picture Frame | 0,52 |
| ViewSonic Monitor | 0,5 |
| Dell Monitor | 0,55 |
| Magnavox Projection TV | 0,58 |
| Digital Picture Frame | 0,6 |
| Digital Picture Frame | 0,62 |
| Digital Picture Frame | 0,65 |
| Philips 52″ Projection TV | 0,65 |
| Wii | 0,7 |
| Digital Picture Frame | 0,73 |
| Xbox Kinect | 0,75 |
| Xbox 360 | 0,78 |
| Microwave | 0,9 |
| Sharp Aquos 3D TV | 0,95 |
| PS3 Move | 0,98 |
| Playstation 3 | 0,99 |
| Element 41″ Plasma TV | 0,99 |
| Current large, flat-screen television | 0,96 |
| Windows-mount air conditioner | 0,9 |
| Legacy CRT-Based color television | 0,7 |
| Legacy flat panel computer monitor | 0,64 |
| While-LED lighting fixture | 0,61 |
| Legacy laptop power adapter | 0,55 |
| Laser Printer | 0,5 |
| Incandescent lamps | 1 |
| Fluorescent lamps (uncompensated) | 0,5 |
| Fluorescent lamps (compensated) | 0,93 |
| Discharge lamps | 0,4-0,6 |
Typical Motor Power Factors:
| Power | Speed | Power Factor | ||
| (hp) | (rpm) | 1/2 load | 3/4 load | full load |
| 0 – 5 | 1800 | 0.72 | 0.82 | 0.84 |
| 5 – 20 | 1800 | 0.74 | 0.84 | 0.86 |
| 20 – 100 | 1800 | 0.79 | 0.86 | 0.89 |
| 100 – 300 | 1800 | 0.81 | 0.88 | 0.91 |
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
kW to VA conversion table-chart:
| kW | Power Factor | VA |
| 1 kW | 0,75 P.f | 1333,3 VA |
| 2 kW | 0,75 P.f | 2666,6 VA |
| 3 kW | 0,75 P.f | 4000 VA |
| 4 kW | 0,75 P.f | 5333,3 VA |
| 5 kW | 0,75 P.f | 6666,6 VA |
| 6 kW | 0,75 P.f | 8000 VA |
| 7 kW | 0,75 P.f | 9333,33 VA |
| 8 kW | 0,75 P.f | 10666,6 VA |
| 9 kW | 0,75 P.f | 12000 VA |
| 10 kW | 0,8 P.f | 12500 VA |
| 20 kW | 0,8 P.f | 25000 VA |
| 30 kW | 0,8 P.f | 37500 VA |
| 40 kW | 0,8 P.f | 50000 VA |
| 50 kW | 0,8 P.f | 62500 VA |
| 60 kW | 0,8 P.f | 75000 VA |
| 70 kW | 0,8 P.f | 87500 VA |
| 80 kW | 0,8 P.f | 100000 VA |
| 90 kW | 0,8 P.f | 112500 VA |
| 100 kW | 0,85 P.f | 117647,05 VA |
| 200 kW | 0,85 P.f | 235294,11 VA |
| 300 kW | 0,85 P.f | 352941,17 VA |
| 400 kW | 0,85 P.f | 470588,2 VA |
| 500 kW | 0,85 P.f | 588235,2 VA |
| 600 kW | 0,85 P.f | 705882,35 VA |
| 700 kW | 0,85 P.f | 823529,4 VA |
| 800 kW | 0,85 P.f | 941176,4 VA |
| 900 kW | 0,85 P.f | 1058823,52 VA |
| 1000 kW | 0,9 P.f | 1111111,11 VA |
| 2000 kW | 0,9 P.f | 2222222,22 VA |
| 3000 kW | 0,9 P.f | 3333333,3 VA |
| 4000 kW | 0,9 P.f | 4444444,4 VA |
| 5000 kW | 0,9 P.f | 5555555,5 VA |
| 6000 kW | 0,9 P.f | 6666666,6 VA |
| 7000 kW | 0,9 P.f | 7777777,77 VA |
| 8000 kW | 0,9 P.f | 8888888,88 VA |
| 9000 kW | 0,9 P.f | 10000000 VA |
| 10000 kW | 0,95 P.f | 10526315,7 VA |
| 20000 kW | 0,95 P.f | 21052631,57 VA |
| 30000 kW | 0,95 P.f | 31578947,3 VA |
| 40000 kW | 0,95 P.f | 42105263,1 VA |
| 50000 kW | 0,95 P.f | 52631578,94 VA |
| 60000 kW | 0,95 P.f | 63157894,73 VA |
| 70000 kW | 0,95 P.f | 73684210,52 VA |
| 80000 kW | 0,95 P.f | 84210526,31 VA |
| 90000 kW | 0,95 P.f | 94736842,1 VA |