Example
Input: 300 HP
Result: 223.7 kW
Step-by-Step Guide
- Input Power – Enter the value in HP or kW.
- Select Direction – Choose HP to kW or kW to HP.
- Calculate – Apply the 0.7457 multiplier.
What is Horsepower to Kilowatts Converter?
In the automotive world, power output is measured differently across regions. The US and UK typically use mechanical Horsepower (HP), while Europe and scientific contexts prefer Kilowatts (kW). Understanding this conversion is crucial when comparing vehicle specifications, modifying engines, or reading dyno sheets from different manufacturers.
How it Works
The standard conversion factor is 1 Mechanical Horsepower = 0.7457 Kilowatts. Conversely, 1 kW = 1.341 HP. The formula applies this factor directly to your input. Note that 'Metric Horsepower' (PS or CV) is slightly different (~0.986 HP), but this tool focuses on the standard mechanical HP used in SAE ratings.
FAQ
What is Brake Horsepower (BHP)?
BHP measures power at the flywheel before friction losses from the gearbox, whereas 'Wheel HP' measures power at the wheels.
Why do electric cars use kW?
Electric motors are electrical devices defined by watts. However, marketing often converts this to HP for consumer familiarity.
Is PS the same as HP?
No, PS (Pferdestärke) is metric horsepower. 1 PS ≈ 0.986 Mechanical HP.
Does temperature affect HP?
Yes, cooler air is denser, leading to better combustion and higher horsepower.
How much is 1000 kW?
1 Megawatt (MW), which equals roughly 1341 HP.
Conclusion
Accurate power conversion ensures you aren't underselling or overestimating an engine's output. Whether tuning an ECU or buying an imported car, knowing the true power in your local unit is essential.