kW to Amps – Conversion, formula, chart, convert and calculator free.

Automatic calculator from kW to Amps with the formulas for single-phase, two-phase, three-phase and direct current equipment.

Here you will find some examples explained , the steps to convert from kW to Amperes and the table of equivalences for kW to Amp. If you do not know the power factor , we will inform you of the most common values .

kW to Amps calculation formula:

formula from convert kW to amperes
  • kW = kilowatt or kilowatts.
  • LN = Volts line to neutral.
  • LL = Volts line to line.
  • AC1Ø = Current / Amps 1 phase.
  • AC2Ø = Current / Amps 2 phase.
  • AC3Ø = Current / Amps 3 phase.
  • FP = Power factor.

How to convert from kW to Amperes in just 3 steps:

how to convert kw to amp in 3 step

Step 1:

Multiply the kW by 1000. For example, if you have a refrigerator that consumes 1.2kW, you must multiply 1,2 × 1000, obtaining 1200, (1,2 × 1000) = 1200.

Step 2:

Multiply the corresponding voltage according to the formula by the power factor and by the root of three. For example, if I have a 220V fridge with a power factor of 0.8, I multiply 220 × 0.8x√3 and get 304.84 ((220 × 0.8x√3) = 304.84.).

Step 3:

Divide step 1 between step 2. (1.2 × 1000) / (220 × 0.8x√3) and get 3.94A.

Examples of conversions kW to Amperes:

Example 1:

We have a monophasic sound equipment – alternating current (AC) of 1.8kW, with a neutral line voltage of 120V and line line of 240V, a power factor of 0.9, how much ampere will the sound equipment have ?.

Rta: // We must multiply the kW by 1000 (1.8kWx1000), to then divide the result between the voltage by the power factor as indicated by the formula for single-phase systems: 1.8kWx1000 / 120 × 0.9 = 16, 67A.

Example 2:

A three-phase elevator (AC) consumes 9kW, has a line voltage of 220V and a power factor of 0.8, which amperage will have in the elevator ?.

Rta: // The first thing to do is multiply the power in kW by 1000 (9kWx1000), which will result in 9000, then you must divide this result between the multiplication of the voltage by the power factor and root of three, of the following way: 220Vx0,8x√3 = 304,8, finally divide 9,000 / 304 = 29,52A.

Example 3:

It has a bulb with a power of 0.5kW biphasic (AC), a line-to-line voltage of 208V and a neutral line voltage of 120V, with a power factor of 0.98, what amperage does the bulb have ?.

Rta: // You must take the kW and multiply them by a thousand, in the following way: 0.5kWx1000 and then divide the above between the multiplication of the voltage, the power factor and two, as indicated by the formula, leaving the next way: (0.5kWx1000) / (2x120x0.98), which will result in: 2.13A.

Table kW a amperes, conversion, equivalence, transformation (Fp = 0.8, volts = 220V, AC, 3F):

How many kW:Ampere Equivalence
 1 kWEquivalence 3,28 Amperes
 2 kW6,56 Amperes
 3 kW9,84 Amperes
4 kW13,12 Amperes
5 kW16,40 Amperes
6 kW19,68 Amperes
7 kW22,96 Amperes
8 kW26,24 Amperes
9 kW29,52 Amperes
10 kW32,80 Amperes
20 kW65,61 Amperes
30 kW98,41 Amperes
40 kW131,22 Amperes
50 kW164,02 Amperes
60 kW196,82 Amperes
70 kW229,63 Amperes
80 kW262,43 Amperes
90 kW295,24 Amperes
100 kW328,04 Amperes
200 kW656,08 Amperes
300 kW984,12 Amperes
400 kW1312,16 Amperes
 500 kW1640,20 Amperes
600 kW1968,24 Amperes
700 kW2296,28 Amperes
800 kW2624,32 Amperes
 900 kW2952,36 Amperes
 1000 kW3280,40 Amperes
1100 kW3608,44 Amperes
1200 kW3936,48 Amperes

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 you should use the calculator that appears at the beginning.

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

How to use the calculator from kW to Amperes:

The first thing you must do is enter the kW you want to convert, then choose the AC or DC current, it is important that once you choose the current you review the data shown on the left of the table, these change according to the current type chosen, then choose the number of phases: 1,2 or 3, this option will only be available if you choose AC current, continue entering the power factor, but if you know you can see the most common below .

Finally enter the voltage, it is very important that you observe the voltage that is requested on the left side of the table, because the correct type of voltage entered (line-line voltage or line-neutral voltage) depends on a good result, finally click on calculate to finish or restart to enter new values.