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Convert kilowatts (kW) to kilovoltamps (kva)

1 kW	1.25 kVA
2 kW	2.5 kVA
3 kW	3.75 kVA
4 kW	5 kVA
5 kW	6.25 kVA
6 kW	7.5 kVA
7 kW	8.75 kVA
8 kW	10 kVA
9 kW	11.25 kVA
10 kW	12.5 kVA
11 kW	13.75 kVA
12 kW	15 kVA
13 kW	16.25 kVA
14 kW	17.5 kVA
15 kW	18.75 kVA
16 kW	20 kVA
17 kW	21.25 kVA
18 kW	22.5 kVA
19 kW	23.75 kVA
20 kW	25 kVA

21 kW	26.25 kVA
22 kW	27.5 kVA
23 kW	28.75 kVA
24 kW	30 kVA
25 kW	31.25 kVA
26 kW	32.5 kVA
27 kW	33.75 kVA
28 kW	35 kVA
29 kW	36.25 kVA
30 kW	37.5 kVA
31 kW	38.75 kVA
32 kW	40 kVA
33 kW	41.25 kVA
34 kW	42.5 kVA
35 kW	43.75 kVA
36 kW	45 kVA
37 kW	46.25 kVA
38 kW	47.5 kVA
39 kW	48.75 kVA
40 kW	50 kVA

41 kW	51.25 kVA
42 kW	52.5 kVA
43 kW	53.75 kVA
44 kW	55 kVA
45 kW	56.25 kVA
46 kW	57.5 kVA
47 kW	58.75 kVA
48 kW	60 kVA
49 kW	61.25 kVA
50 kW	62.5 kVA
51 kW	63.75 kVA
52 kW	65 kVA
53 kW	66.25 kVA
54 kW	67.5 kVA
55 kW	68.75 kVA
56 kW	70 kVA
57 kW	71.25 kVA
58 kW	72.5 kVA
59 kW	73.75 kVA
60 kW	75 kVA

61 kW	76.25 kVA
62 kW	77.5 kVA
63 kW	78.75 kVA
64 kW	80 kVA
65 kW	81.25 kVA
66 kW	82.5 kVA
67 kW	83.75 kVA
68 kW	85 kVA
69 kW	86.25 kVA
70 kW	87.5 kVA
71 kW	88.75 kVA
72 kW	90 kVA
73 kW	91.25 kVA
74 kW	92.5 kVA
75 kW	93.75 kVA
76 kW	95 kVA
77 kW	96.25 kVA
78 kW	97.5 kVA
79 kW	98.75 kVA
80 kW	100 kVA

Apparent power (P_kVA) conversion, when power factor (PF) is various but true power (P_kW) is fixed (10 kW).

0.21	47.62 kVA
0.22	45.45 kVA
0.23	43.48 kVA
0.24	41.67 kVA
0.25	40 kVA
0.26	38.46 kVA
0.27	37.04 kVA
0.28	35.71 kVA
0.29	34.48 kVA
0.3	33.33 kVA
0.31	32.26 kVA
0.32	31.25 kVA
0.33	30.3 kVA
0.34	29.41 kVA
0.35	28.57 kVA
0.36	27.78 kVA
0.37	27.03 kVA
0.38	26.32 kVA
0.39	25.64 kVA
0.4	25 kVA

0.41	24.39 kVA
0.42	23.81 kVA
0.43	23.26 kVA
0.44	22.73 kVA
0.45	22.22 kVA
0.46	21.74 kVA
0.47	21.28 kVA
0.48	20.83 kVA
0.49	20.41 kVA
0.5	20 kVA
0.51	19.61 kVA
0.52	19.23 kVA
0.53	18.87 kVA
0.54	18.52 kVA
0.55	18.18 kVA
0.56	17.86 kVA
0.57	17.54 kVA
0.58	17.24 kVA
0.59	16.95 kVA
0.6	16.67 kVA

0.61	16.39 kVA
0.62	16.13 kVA
0.63	15.87 kVA
0.64	15.63 kVA
0.65	15.38 kVA
0.66	15.15 kVA
0.67	14.93 kVA
0.68	14.71 kVA
0.69	14.49 kVA
0.7	14.29 kVA
0.71	14.08 kVA
0.72	13.89 kVA
0.73	13.7 kVA
0.74	13.51 kVA
0.75	13.33 kVA
0.76	13.16 kVA
0.77	12.99 kVA
0.78	12.82 kVA
0.79	12.66 kVA
0.8	12.5 kVA

0.81	12.35 kVA
0.82	12.2 kVA
0.83	12.05 kVA
0.84	11.9 kVA
0.85	11.76 kVA
0.86	11.63 kVA
0.87	11.49 kVA
0.88	11.36 kVA
0.89	11.24 kVA
0.9	11.11 kVA
0.91	10.99 kVA
0.92	10.87 kVA
0.93	10.75 kVA
0.94	10.64 kVA
0.95	10.53 kVA
0.96	10.42 kVA
0.97	10.31 kVA
0.98	10.2 kVA
0.99	10.1 kVA
1	10 kVA

Scientist: 2019-10-02 09:59:42

Apparent and True power formula (equation) and description

Apparent power (P_kva) is measured in kilo volt-amps. True power ( P _kW) is measured in kilowatts. Apparent power is wasted for some reason. So true power is less than the apparent one. Parameter which describes this phenomenon is called "Power factor (PF)". The power factor has no measurement unit type, it is simply a ratio.

P_kW= P_kva * PF

P_kva= P_kW/ PF

PF = P_kW / P_kva

Guest: 2024-11-14 03:09:51

In electrical engineering, there are three types of electrical power. Active (P, kW) shows how much electricity is spent on the device's useful work. Reactive (Q, kVar) shows the energy consumption for transient processes, such as the reversal of the windings of a generator, electric motor, inverter, or converter. Total (S, kVA) power is calculated as the sum of P and Q. The power of most electrical installations is indicated in kW, but kVA can be found on some devices. In kW, the active power of electrical equipment is measured and spent on useful work; in kVA, it is the total sum of the active and reactive components.

To convert kVA to kW, use the formula:

P = S * cos (φ).

Here, cos (φ) is the power factor, by default taken as 0.8, although it varies depending on the electrical circuit. The multiplier can take the following values:

From 0.95 - high; 0.8 - 0.95 – good; 0.65 - 0.8 – acceptable; 0.5 - 0.65 – low; up to 0.5 – unsatisfactory.

Use the online calculator to quickly convert kVA to kW and back. Enter the electrical installation's power value in one of the fields, and if necessary, change the default coefficient value (if it differs from 0.8). To get the result, click "Convert."

The apparent power of the electrical installation is given: S = 630 kVA, we need to calculate its active component, P. We will use the mentioned formula: P = S * cos (φ). Since the multiplier value is not given, we take it as 0.8. We get:

P = 630 * 0.8 = 504 kW.

Mike: 2025-02-14 03:22:46

Converting kVA to kW using formulas — how do you convert power correctly?

Every buyer of uninterruptible power supplies and generators must convert kW to kVA. Manufacturers often indicate one value, which leads to confusion when choosing. Let's look into this issue. So, what is the difference between kW and kVA in simple terms? Power supplies operating with alternating current can be connected to various loads. The apparent power includes active and reactive components. The latter indicator depends on the difference in voltage and current in the phase.

For a reactive load, such as electric motors, this value can be larger, both positive and negative. It must be taken into account when choosing power supplies; otherwise, the operating mode of this equipment will not be optimal, leading to a reduction in service life. For this reason, it is necessary to convert kVA to kW and vice versa.

Now, we need to understand the difference between kVA and kW from the point of view of scientific definitions and concepts. Kilowatts measure active energy, which is spent directly on the useful work of the connected equipment, for example, heating a heating element or another heater.
Kilovolt-amperes measure the total power, considering the inductive component, which is also consumed to perform a certain work. The difference between kVA and kW can be characterized as follows: the first value determines the power that must be spent, and the second value is the amount of useful work the connected load can perform. Usually, the total power is compared with the gross weight, and the active power with the net weight.

Watt is the indicator at which work equal to 1 joule will be performed in 1 second. In addition, it is equal to the product of direct current with a voltage of 1 volt and a current of 1 ampere. For direct circuits, the total consumption of the received energy is typical, since the capacitive or inductive component of the load is absent.

Volt-ampere is the product of the voltage at the ends of the network and the strength of the alternating current acting in it. Considering these indicators may not coincide in phase, part of the consumed energy is not used for actual work, but is transferred by electromagnetic fields. For this reason, this indicator is sometimes called "apparent power."

What determines the ratio of kVA and kW

Depending on its type, the connected load has a reverse effect on the power source. The current curve can lead or lag behind the voltage sine wave depending on its features. This indicator determines the conversion factor of kVA to kW.

In electrical engineering, the power factor numerically equals the cosine of the phase shift between voltage and current (cos phi). A value in the range of 0.95–1 is considered high, a good value is from 0.8 and above, anything lower is considered satisfactory and low, which indicates a large part of the inductive or capacitive component in the load.

How to convert kVA to kW and vice versa

You can find out how many kW there are in kVA in several ways; it all depends on how accurate the result needs to be. High accuracy will be required when connecting powerful industrial equipment with a large reactive component that may negatively affect the power grid or generating units.

If you need to convert kVA power to kW for ordinary household equipment, simplified methods are used, with a small error that can be neglected.

Such a conversion of kVA to kW can be found in the documentation of generator and UPS manufacturers. They do not know what load will be connected to the source. It can be a kettle with a power factor of 1 or a low-quality electric motor with a characteristic cos phi of 0.6.

For this reason, the conversion is carried out using an approximate principle. A normal coefficient is considered to be at least 0.8; this is the value taken to convert the total power to active power and vice versa:

To get a kilowatt from a kilovolt-ampere, 20% is subtracted from the existing value or divided by 0.8. Thus, an active load of 4 kilowatts can be connected to a generator designed for five kilovolts-amperes.
For the reverse conversion, the number of kilowatts is divided by 0.8, which gives the required total power of the power source.

This simplified parameter conversion scheme is widely used. We recommend it when choosing a power source or generator for household purposes.

To accurately convert kVA to kW, you already need to know the power factor of the power source or connected equipment. Let us repeat that such a calculation is used mainly for powerful installations, for which reactive energy losses can significantly increase the payment for consumed electricity.

The principle of conversion is the same as that of the approximate method. The difference is that the exact value of cos phi is used. To determine the permissible or consumed active power, kilovolts-amperes are multiplied by this indicator, and when recalculating inversely, they are divided.

In order not to do the mathematical calculations yourself, it is recommended to use the capabilities of the online calculator. The calculation uses an exact formula for the actual power factor. The program performs direct and reverse conversion of values.

Practice has shown that such calculations are necessary only for household electricity consumption when purchasing UPS or generators. Since it is impossible to determine the characteristics of the entire connected load accurately (today a kettle, tomorrow a tool, or complex electronic equipment with capacitive and inductive elements), an approximate formula is used, considering a power factor of 0.8.

Jim: 2025-05-14 03:30:03

Electrical appliances have different power ratings (the rate of conversion of electrical energy). Thus, a light bulb can have a rating of 1 W, a tram engine more than 50 thousand W, and an electric iron from several hundred to several thousand W.

In the technical data sheet of the purchased electrical equipment, sometimes instead of the usual power unit W or kW (watt, kilowatt), there is a designation kVA, which is decoded as kilovolt-ampere. In this case, uninformed users have difficulties calculating the load on the socket and the figures for the device's electricity consumption.

The well-known kilowatts reflect the active power of the welding inverter (or other equipment) during its operation. Calculating power in kVA is problematic because it also takes into account the consumption of part of the energy to create a magnetic field. Manufacturers indicate power in kVA when a mixed load is supposed to be used, for example, for transformers and electric motors.

Measured in kW/hour, appears due to the resistance of the equipment being operated, for example, a tubular electric heater. There is no direct consumption during the accumulation and transmission of energy. Therefore, the capacitive load is a reactive component. Capacitor banks, high-voltage power lines, and rectifiers are indicative. An electromagnetic field is created inside the devices. This is typical for an electric motor operating on a mixed type of load (inductive and resistive).

To calculate kW, knowing the kVA, it is necessary to subtract 20 percent from the kVA indicator. The following ratio is taken into account: 1 kilovolt-ampere is equal to 0.8 kilowatts.

The power value can be obtained by multiplying the current by the voltage. You can find the values of the multipliers in the technical documentation of the equipment, special reference books, or by using devices. A wattmeter measures current and voltage and instantly converts them into power.

So, converting kVA to kW is feasible not only for electricians. Often, the designation in different units is due to the difference in the expected types of load. Knowledge of formulas and the rules for operating electrical appliances will help make equipment use safe, comfortable, and predictable.

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Convert kilowatts (kW) to kilovoltamps (kva)

Apparent power (PkVA) conversion, when true power (PkW) is various but power factor (PF) is fixed (0.8).

Apparent power (PkVA) conversion, when power factor (PF) is various but true power (PkW) is fixed (10 kW).

Converting kVA to kW using formulas — how do you convert power correctly?

What determines the ratio of kVA and kW

How to convert kVA to kW and vice versa

QUOTES, SAYINGS:

Apparent power (P_kVA) conversion, when true power (P_kW) is various but power factor (PF) is fixed (0.8).

Apparent power (P_kVA) conversion, when power factor (PF) is various but true power (P_kW) is fixed (10 kW).