Horsepower to Kilowatts Converter
1 horsepower = 0.7457 kilowatts.
Enter a value
Result
1 horsepower, mechanical =
0.7457 Kilowatt (kW)
1 Horsepower, mechanical (hp) × 0.7457 = 0.7457 Kilowatt (kW)
The working
- 1. Convert 1 Horsepower, mechanical (hp) to watts: 1 × 745.7 = 745.7.
- 2. Convert to Kilowatt (kW): 745.7 ÷ 1,000 = 0.7457.
1 Horsepower, mechanical (hp) in every unit
Everyday power levels
- LED light bulb
- 10 W
- Electric kettle
- 2,000 W
- Small car engine
- 75 kW ≈ 100 hp
- Window air conditioner
- 5,000 BTU/h ≈ 1.5 kW
- Wind turbine
- 3 MW
- Large power station
- 1,000 MW
Conversion table
Horsepower to Kilowatts
| Horsepower | Kilowatts |
|---|---|
| 50 | 37.285 |
| 75 | 55.927 |
| 100 | 74.57 |
| 120 | 89.484 |
| 150 | 111.85 |
| 200 | 149.14 |
| 250 | 186.42 |
| 300 | 223.71 |
| 400 | 298.28 |
| 500 | 372.85 |
Kilowatts to Horsepower
| Kilowatts | Horsepower |
|---|---|
| 50 | 67.051 |
| 75 | 100.58 |
| 100 | 134.1 |
| 120 | 160.92 |
| 150 | 201.15 |
| 200 | 268.2 |
| 250 | 335.26 |
| 300 | 402.31 |
| 400 | 536.41 |
| 500 | 670.51 |
Formula and worked example
kilowatts = horsepower × 0.74569987 (1 mechanical horsepower is about 745.7 W).
Convert 150 horsepower to kilowatts: 150 × 0.74569987 = 111.855 kW.
When you need this
Car engines are rated in horsepower in the US and UK but in kilowatts in Europe and on vehicle registration documents.
Questions people ask
How many kilowatts are in a horsepower?
One horsepower is 0.74569987 kilowatts. 1 mechanical horsepower is about 745.7 W.
How do I convert horsepower to kilowatts?
Multiply the number of horsepower by 0.74569987, or divide by 1.3410221.
What is 200 hp in kW?
200 horsepower is 149.14 kilowatts.
How do I convert kilowatts back to horsepower?
Multiply by 1.3410221: one kilowatt is 1.3410221 horsepower.
Related conversions
How we calculate this
Power units follow the SI watt and the internationally agreed definitions of mechanical horsepower (745.69987 W), metric horsepower (735.49875 W) and the BTU (1,055.05585 J). Source: NIST Handbook 44 (Appendix C).
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