KW to HP calculator
Convert kilowatts (kW) to horsepower (HP) and HP to kW with our easy-to-use power calculator.
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You can now use all of Motoristo’s tools and calculators directly from our new app on the Google Play Store (iOS coming soon).
The app lets you save and load configurations, and even works offline, perfect for when you're out in the garage or on the go.
Understanding the different parameters
Kilowatts (kW)
Kilowatts are a metric unit of power. It tells you how much work an engine can do over time. In simple terms, the higher the kilowatts, the more powerful the engine. This is the standard measurement used in most of Europe and many other parts of the world.
Horsepower (HP)
Horsepower is the more familiar unit for many enthusiasts, especially in the UK and US. It's been used for over a century to describe how much power an engine can produce. While there are a few different definitions of horsepower, this calculator uses mechanical or brake horsepower (bhp), which is commonly used for cars.
How to convert between kW and horsepower
To convert kilowatts to horsepower, multiply the power in kW by 1.341. To go the other way—from horsepower to kilowatts—divide the horsepower by the same number.
This simple conversion helps compare power outputs across different standards, whether you're reading a European dyno chart or shopping for a JDM import. Same power, just different units.