Convert Horsepower to Kilowatts

Enter the power in horsepower below to get the value converted to kilowatts.

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Results in Kilowatts:
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1,000 hp(I) = 745.699872 kW

How to Convert Horsepower to Kilowatts

To convert horsepower to a kilowatt measurement, use one of the formulas below.

Mechanical Horsepower to Kilowatts

Formula to convert mechanical horsepower to kilowatts:

kilowatts = hp(I) × 0.7457

Since one mechanical horsepower is equal to 0.7457 kilowatts, the formula to find kilowatts is to multiply mechanical horsepower by 0.7457.

For example, here's how to convert 5 mechanical horsepower to kilowatts using the formula.
5 hp(I) = (5 × 0.7457) = 3.728499 kW

Electric Horsepower to Kilowatts

Formula to convert electric horsepower to kilowatts:

kilowatts = hp(E) × 0.746

Since one electric horsepower is equal to 0.746 kilowatts, the formula to find kilowatts is to multiply electric horsepower by 0.746.

For example, here's how to convert 5 electric horsepower to kilowatts using the formula.
5 hp(E) = (5 × 0.746) = 3.73 kW

Metric Horsepower to Kilowatts

Formula to convert metric horsepower to kilowatts:

kilowatts = hp(M) × 0.735499

Since one metric horsepower is equal to 0.735499 kilowatts, the formula to find kilowatts is to multiply metric horsepower by 0.735499.

For example, here's how to convert 5 metric horsepower to kilowatts using the formula.
5 hp(M) = (5 × 0.735499) = 3.677494 kW

Boiler Horsepower to Kilowatts

Formula to convert boiler horsepower to kilowatts:

kilowatts = hp(S) × 9.8095

Since one boiler horsepower is equal to 9.8095 kilowatts, the formula to find kilowatts is to multiply boiler horsepower by 9.8095.

For example, here's how to convert 5 boiler horsepower to kilowatts using the formula.
5 hp(S) = (5 × 9.8095) = 49.0475 kW

Horsepower and kilowatts are both units used to measure power. Keep reading to learn more about each unit of measure.

Horsepower

The term horsepower was adopted by Scottish inventor James Watt to measure the power output of his steam engine and to compare that power with that of horses horses.[1] Horsepower were later used to measure the power output of piston and turbine engines and electrical motors.

There are now several different types of horsepower, including mechanical, electrical, metric, boiler, brake, and indicated, and they all have different applications in industry. Mechanical and electric are the most commonly used types.

Mechanical Horsepower

Mechanical horsepower is often used to measure the output of engines and motors in North America. One mechanical horsepower is equal to 745.69987158227022 watts.

The mechanical horsepower is a US customary and imperial unit of power. Mechanical horsepower can be abbreviated as hp(I), for example 1 mechanical horsepower can be written as 1 hp(I).

Electric Horsepower

Electric horsepower is used to measure the output of electric motors and other electrical machines in the US. One electric horsepower is equal to exactly 746 watts.

The electric horsepower is a US customary and imperial unit of power. Electric horsepower can be abbreviated as hp(E), for example 1 electric horsepower can be written as 1 hp(E).

Metric Horsepower

One metric horsepower is the power needed to one metric horsepower as the lift a 75 kilogram mass at at one meter per second.[2] One metric horsepower is equal to 735.49875 watts.

The metric horsepower is a non-SI metric unit for power. Metric horsepower can be abbreviated as hp(M), and are also sometimes abbreviated as PS, cv, hk, pk, ks, or ch. For example, 1 metric horsepower can be written as 1 hp(M), 1 PS, 1 cv, 1 hk, 1 pk, 1 ks, or 1 ch.

Boiler Horsepower

Boiler horsepower is used to measure the power of a boiler to generate steam. One boiler horsepower is equal to the power needed to evaporate 34.5 pounds in one hour.[3]

Boiler horsepower can be abbreviated as hp(S), for example 1 boiler horsepower can be written as 1 hp(S).

Try our engine horsepower calculator to calculate the power of a motor.

Kilowatts

One kilowatt is the power equal to 1,000 watts, or the energy consumption at a rate of 1,000 joules per second.

The kilowatt is a multiple of the watt, which is the SI derived unit for power. In the metric system, "kilo" is the prefix for 103. Kilowatts can be abbreviated as kW, for example 1 kilowatt can be written as 1 kW.

Horsepower to Kilowatt Conversion Table

Kilowatts converted to various horsepower values.
Kilowatts Mechanical Horsepower Electric Horsepower Metric Horsepower Boiler Horsepower
1 kW 1.341 1.3405 1.3596 0.101942
2 kW 2.682 2.681 2.7192 0.203884
3 kW 4.0231 4.0214 4.0789 0.305826
4 kW 5.3641 5.3619 5.4385 0.407768
5 kW 6.7051 6.7024 6.7981 0.50971
6 kW 8.0461 8.0429 8.1577 0.611652
7 kW 9.3872 9.3834 9.5174 0.713594
8 kW 10.73 10.72 10.88 0.815536
9 kW 12.07 12.06 12.24 0.917478
10 kW 13.41 13.4 13.6 1.0194
11 kW 14.75 14.75 14.96 1.1214
12 kW 16.09 16.09 16.32 1.2233
13 kW 17.43 17.43 17.68 1.3252
14 kW 18.77 18.77 19.03 1.4272
15 kW 20.12 20.11 20.39 1.5291
16 kW 21.46 21.45 21.75 1.6311
17 kW 22.8 22.79 23.11 1.733
18 kW 24.14 24.13 24.47 1.835
19 kW 25.48 25.47 25.83 1.9369
20 kW 26.82 26.81 27.19 2.0388
21 kW 28.16 28.15 28.55 2.1408
22 kW 29.5 29.49 29.91 2.2427
23 kW 30.84 30.83 31.27 2.3447
24 kW 32.18 32.17 32.63 2.4466
25 kW 33.53 33.51 33.99 2.5486
26 kW 34.87 34.85 35.35 2.6505
27 kW 36.21 36.19 36.71 2.7524
28 kW 37.55 37.53 38.07 2.8544
29 kW 38.89 38.87 39.43 2.9563
30 kW 40.23 40.21 40.79 3.0583
31 kW 41.57 41.55 42.15 3.1602
32 kW 42.91 42.9 43.51 3.2621
33 kW 44.25 44.24 44.87 3.3641
34 kW 45.59 45.58 46.23 3.466
35 kW 46.94 46.92 47.59 3.568
36 kW 48.28 48.26 48.95 3.6699
37 kW 49.62 49.6 50.31 3.7719
38 kW 50.96 50.94 51.67 3.8738
39 kW 52.3 52.28 53.03 3.9757
40 kW 53.64 53.62 54.38 4.0777

References

  1. Encyclopædia Britannica, Horsepower, https://www.britannica.com/science/horsepower
  2. Merriam-Webster, metric horsepower, https://www.merriam-webster.com/dictionary/metric%20horsepower
  3. Wikipedia, Horsepower, https://en.wikipedia.org/wiki/Horsepower