Watts to VA – Calculator converter chart and formula free

With this tool you can convert online Watts to VA automatically, easy, fast and free, we show you how to convert from Watts to VA.

For greater ease we explain that formula is used for the calculation and a table with the main conversions of Watts to VA.

We also show the most common power factors of different constructions, appliances and motors.

Watt to VA calculation formula:watts to va formula

  • Watts=Watt is the unit of power (symbol: W).
  • VA=Volt-Ampere.
  • P.F=Power factor

How to convert Watts to VA in only 1 step.

how convert watt to va

 

Step 1:

Divide the W (Watts) between the power factor (F.P). See the common power factors on this website: https://www.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 1200W and has a power factor of 0.9, then you should divide 1200W by 0.9 to obtain 1333Watts. (1200W /0.9 = 1333Watts)

 

Definition F.P, S (VA) and P (Watts):

Watts: 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 W.

VA: A kilovolt-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 W 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 (W).

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

F.p: 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
Brewery0.75-0.80
Cement0.80-0.85
Chemical0.65-0.75
Coal Mine0.65-0.80
Clothing0.35-0.60
Electroplating0.65-0.70
Foundry0.75-0.80
Forging0.70-0.80
Hospital0.75-0.80
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
Plastic0.75-0.80
Stamping0.60-0.70
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
Wii0,7
Digital Picture Frame0,73
Xbox Kinect0,75
Xbox 3600,78
Microwave0,9
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
http://www.engineeringtoolbox.com

 

Watts to VA table chart for conversion, equivalence, transformation:

WattsF.P (Factor de potencia)VA
10,751,33
20,752,67
30,754,00
40,755,33
50,756,67
60,758,00
70,759,33
80,7510,67
90,7512,00
100,812,50
200,825,00
300,837,50
400,850,00
500,862,50
600,875,00
700,887,50
800,8100,00
900,8112,50
1000,85117,65
2000,85235,29
3000,85352,94
4000,85470,59
5000,85588,24
6000,85705,88
7000,85823,53
8000,85941,18
9000,851058,82
10000,91111,11
20000,92222,22
30000,93333,33
40000,94444,44
50000,95555,56
60000,96666,67
70000,97777,78
80000,98888,89
90000,910000,00
100000,9510526,32
200000,9521052,63
300000,9531578,95
400000,9542105,26
500000,9552631,58
600000,9563157,89
700000,9573684,21
800000,9584210,53
900000,9594736,84
1000001100000,00
2000001200000,00
3000001300000,00
4000001400000,00
5000001500000,00
6000001600000,00
7000001700000,00
8000001800000,00
9000001900000,00
100000011000000,00

Rate this converter Watts a VA: