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Horsepower to Kilowatts

1 horsepower (mechanical) = 0.7457 kilowatts · 1 kW = 1.341 hp

1 horsepower (mechanical) = 0.7457 kilowatts

How it’s calculated

kW = hp × 0.7456998716

  • Multiply the value in horsepower by 0.7456998716.
  • To go back, divide by 0.7456998716 (or multiply by 1.34102209).
  • 1 hp = 0.7456998716 kW · 1 kW = 1.34102209 hp
Show worked solutionFactor, unit cancellation and rounding, step by step

  1. Find the conversion factor

    By definition 1 hp = 745.69987158227 W and 1 kW = 1000 W, so 1 hp = 0.74569987158227 kW. Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.) (SI prefixes and accepted units).

  2. Multiply by the factor written as a fraction

    Put hp in the denominator so it cancels, leaving kW.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 0.7457 kW

1 hp in other units

Batch convert hp → kW
Results
  1. 1 hp = 0.7457 kW
  2. 5 hp = 3.7285 kW
  3. 10 hp = 7.457 kW
  4. 25 hp = 18.642 kW

Permanent link to this conversion

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Quick examples

  • 1 horsepower (mechanical) = 0.7457 kilowatts
  • 5 horsepower = 3.7285 kilowatts
  • 10 horsepower = 7.457 kilowatts
  • 25 horsepower = 18.642 kilowatts
  • 100 horsepower = 74.57 kilowatts

About these units

Horsepower (mechanical) (hp)

US & imperial (identical)

550 ft·lbf/s ≈ 745.699 872 W.

1 hp = 745.6998716 W

Source: NIST SP 811 / Handbook 44

Kilowatt (kW)

SI (metric)

1 kW = 1000 W

Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units)

Horsepower to kilowatts conversion table

horsepower (mechanical) (hp) to kilowatt (kW)
Horsepower (hp)Kilowatts (kW)
0.1 hp0.07457 kW
0.5 hp0.37285 kW
1 hp0.7457 kW
2 hp1.4914 kW
3 hp2.2371 kW
4 hp2.9828 kW
5 hp3.7285 kW
6 hp4.4742 kW
7 hp5.2199 kW
8 hp5.9656 kW
9 hp6.7113 kW
10 hp7.457 kW
15 hp11.185 kW
20 hp14.914 kW
25 hp18.642 kW
30 hp22.371 kW
40 hp29.828 kW
50 hp37.285 kW
75 hp55.927 kW
100 hp74.57 kW
250 hp186.42 kW
500 hp372.85 kW
1,000 hp745.7 kW

Related conversions

Frequently asked questions

How do I convert horsepower to kilowatts?

Use kW = hp × 0.7456998716. Multiply the value in horsepower by 0.7456998716.

How many kilowatts are in 1 horsepower (mechanical)?

1 horsepower (mechanical) (hp) equals 0.7457 kilowatts (kW); more precisely 0.7456998716.

How many horsepower are in 1 kilowatt?

1 kilowatt (kW) equals 1.341 horsepower (hp); more precisely 1.34102209.

What is 10 hp in kW?

10 horsepower = 7.457 kilowatts.

What is a horsepower (mechanical)?

550 ft·lbf/s ≈ 745.699 872 W.

Formula: kW = hp × 0.7456998716. Factors last reviewed 2026-10-27.