Watts to Horsepower Converter
Convert watts to horsepower. 1000 W โ 1.341 hp (mechanical).
Result
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How to use this calculator
- Enter watts.
- Pick HP convention.
- Read horsepower.
About this calculator
Inverse of horsepower-to-watts. Most consumer-grade motor specs are in W or kW; converting to hp gives a more familiar number for US car-and-tool buyers. A 1500 W vacuum cleaner is โ 2 hp; a 100 kW car engine is โ 134 hp.
Frequently asked
Why does my US car spec say "horsepower" but European says "kW"?+
Just regional convention. Both measure the same thing โ engine power. 100 hp โ 75 kW.
What's a "kilowatt-hour"?+
Energy, not power. 1 kWh = 1 kW ร 1 hour = 3.6 MJ. Used on electric bills.
Are car horsepower numbers honest?+
Mostly yes for SAE-rated US cars. Some manufacturers historically inflated; SAE 1995+ standardized testing.
Brake horsepower vs flywheel horsepower?+
BHP is at the engine (no drivetrain loss); wheel hp is what reaches the ground (~80-85% of BHP for typical cars).
Quick mental conversion?+
kW ร 1.34 โ hp. hp ร 0.75 โ kW.
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