Amp to kw – Conversion, formula, chart, convert and calculator free.

With this calculator you can convert online of Amperes to kW or kW to Amperes automatically, easily, quickly and free.

In order to facilitate the calculation we explain what formula is used, how to calculation in only 2 steps, table and examples of Ampere to kW conversions.

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

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More information on converting from Amp to kW:


Amp to kW calculation formula:Formula from Amp to kW

  • kW = kilowatt or kilowatts.
  • V LN = Volts line to neutral.
  • V LL = Voltage line to line.
  • I AC1Ø = Current / monophase Amps.
  • I AC2Ø = Current / Biphasic Amps.
  • I AC3Ø = Current / Three- phase Amps.
  • FP = Load power factor.

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How to convert Amps to kW in 2 steps.

How to convert or change from Amps to kW in just 2 steps

Step 1:

Multiply the corresponding voltage according to the formula by the power factor, the current and the root of three. For example, if you have a 220V (Linea-Line) refrigerator with a power factor of 0.8, and a current of 5 Amps, you should multiply 220 × 0.8x√3 × 5 and obtain 1524.20. 220 × 0.8x√3 × 5) = 1524.20.

Step 2:

Divide step 1 by 1000, taking the previous example we would have: (220 × 0.8x√3 × 5) / 1000 = 1.52kW.

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Examples of conversions for Amps to kW:

Example 1:

Is there a mill with a load of 50A, three-phase to 220V line-line, with a power factor of 0.85 and a line-neutral voltage of 127V, which will be the power in kW of the mill?

Rta: // To find the result we must multiply the amperage, the line-line voltage, the power factor and the root of three in the following way: 50Ax220Vx0,85x√3 = 16194, then we simply divide the previous result by 1000, which will give an amperage of 16.1kW

Example 2:

We have a hair dryer, single phase, 1F, with an amperage of 12A, a voltage of 120V line-neutral and a power factor of 0.88, what power in kW does the hair dryer have?

Rta: // Taking into account the formula for monophasic amperage, we must multiply the amperage by the voltage and the power factor, to finally divide the previous one by 1000, as we can see below: (12Ax120Vx0,88) / 1000 = 1 , 27kW.

Example 3:

We have a 30A, bifasica stove, with a voltage of 240V line-line and 127 line-neutral, with a power factor of 0.99, which will be the power in kW of the stove?

Rta: // To know the answer, you must multiply the amperage 30A, by the voltage line to neutral 127V, by the power factor and by 2, and then divide the previous one by 1000, as follows: (30Ax127Vx0,99 × 2) / 1000, resulting in: 7.54kW

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Amperes to kW, equivalence table, conversion and transformation (Fp = 0.8, voltage = 220V, AC, 3F):

How many Amps are: Equivalence in kW
 1 Amp. Equivalent to 0.30 kW
 2 Amp. 0.61 kW
3 Amp. 0.91 kW
4 Amp. 1,22 kW
5 Amp. 1.52 kW
 6 Amp. 1.83 kW
7 Amp. 2.13 kW
8 Amp. 2.44 kW
9 Amp. 2.74 kW
10 Amp. 3.05 kW
20 Amp. 6.10 kW
30 Amp. 9.15 kW
40 Amp. 12.19 kW
 50 Amp. 15.24 kW
 60 Amp. 18.29 kW
70 Amp. 21.34 kW
80 Amp. 24.39 kW
90 Amp. 27.44 kW
100 Amp. 30.48 kW
200 Amp. 60.97 kW
300 Amp. 91.45 kW
400 Amp. 121,94 kW
500 Amp. 152.42 kW
600 Amp. 182.90 kW
 700 Amp. 213.39 kW
800 Amp. 243.87 kW
900 Amp. 274.36 kW
1000 Amp. 304.84 kW
1100 Amp. 335.33 kW
1200 Amp. 365.81 kW
1300 Amp. 396.29 kW
1400 Amp. 426.78 kW
 1500 Amp. 457.26 kW
1600 Amp. 487.75 kW

Note: The conversions of the previous table were made taking into account a power factor of 0.8, a voltage of 220V, with a three-phase AC power, for different variables the calculator that appears at the beginning must be used.

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Typical power factor for engines, constructions and appliances.

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

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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

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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

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How to use the Amp calculator to kW:

It is very simple, first enter the amperage to convert, then choose the type of AC or DC current, according to the current chosen different parameters are requested so you must be aware of the boxes on the left in the calculator, then choose the number of phases 1, 2 or 3, this parameter only applies to when you choose AC current, then enter the power factor, if you do not know what power factor the load has you can see some here.

Continue entering the voltage, this section is very important, you must enter the voltage indicated by the table to the left (line-line voltage or line-neutral voltage), otherwise the result may not be correct, finally you give “Calculate” and then if you want to perform another “restart” calculation.