Horsepower to kilowatts converter
Convertersconversion pair
Convert horsepower to kilowatts instantly: 1 horsepower is 0.7457 kilowatts. The exact inverse of kilowatts-to-horsepower, with a copy button and no dyno math.
150 hp is 112 kW — the muscle car's polite European name.
work surface
Math, not advice — results are indicative. Read the disclaimer.
pro tips
Quick mental math: divide by 1.34. 200 hp becomes about 150 kW, close enough for any import form.
1 hp ≈ 0.75 kW — the friendly fraction that converts half the garage.
150 hp ≈ 112 kW: the commuter car, with its identity converted for Europe.
what it does
The horsepower-to-kilowatts trick runs backwards: multiply by 0.7457 and the kilowatts appear. It's the conversion you need when an American spec sheet meets a European registration form, and the paperwork decides the engine's identity.
You meet it everywhere horsepower travels: a car rated 150 hp (that's 112 kW when the EU makes it fill out the metric box), a muscle car bragging 300 hp (223.7 kW of attitude, tax-simplified), a boat motor that's 200 hp on the water, or an imported generator whose sticker speaks in watts while the manual shrugs.
The rough version: divide by 1.34, or multiply by 0.75. 200 hp becomes about 150 kW, close enough for registrations, rentals and anything that isn't measured on a dyno. For the exact number, the widget below is precise and never argues back.
Type any horsepower number and the widget answers in kilowatts on the spot, with the math in the hint. Click the result to copy it, and hit swap when the conversation turns the other way — the kilowatts-to-horsepower version is waiting for it.
quick answers
How many kilowatts is 150 horsepower?
111.86 kW. The classic American commuter, translated into metric for the paperwork.
Is 1 horsepower equal to 1 kilowatt?
No — 1 hp is about 0.746 kW. A kilowatt is roughly 1.34 hp, so the horsepower just gets to count in bigger numbers.
Why do US cars use horsepower?
Tradition from the steam-and-horse era, kept alive by marketing. The US stuck with it; Europe standardized on kilowatts for tax and specs.
What is PS compared to horsepower?
PS (metric horsepower) is 735.5 W, hp is 745.7 W. Nearly identical; the difference is small enough to lose an argument over but not a race.