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
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).
Multiply by the factor written as a fraction
Put hp in the denominator so it cancels, leaving kW.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 0.7457 kW
1 hp in other units
Batch convert hp → kW
- 1 hp = 0.7457 kW
- 5 hp = 3.7285 kW
- 10 hp = 7.457 kW
- 25 hp = 18.642 kW
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 (hp) | Kilowatts (kW) |
|---|---|
| 0.1 hp | 0.07457 kW |
| 0.5 hp | 0.37285 kW |
| 1 hp | 0.7457 kW |
| 2 hp | 1.4914 kW |
| 3 hp | 2.2371 kW |
| 4 hp | 2.9828 kW |
| 5 hp | 3.7285 kW |
| 6 hp | 4.4742 kW |
| 7 hp | 5.2199 kW |
| 8 hp | 5.9656 kW |
| 9 hp | 6.7113 kW |
| 10 hp | 7.457 kW |
| 15 hp | 11.185 kW |
| 20 hp | 14.914 kW |
| 25 hp | 18.642 kW |
| 30 hp | 22.371 kW |
| 40 hp | 29.828 kW |
| 50 hp | 37.285 kW |
| 75 hp | 55.927 kW |
| 100 hp | 74.57 kW |
| 250 hp | 186.42 kW |
| 500 hp | 372.85 kW |
| 1,000 hp | 745.7 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.