Kilowatts to Horsepower
Convert kilowatt to horsepower instantly — type a value and read the result, with the exact formula shown.
Example
1 kW = 1.341022 hp, 5 kW = 6.70511 hp, 10 kW = 13.41022 hp.
How it works
Horsepower = Kilowatt × 1.341022. Every value is converted through a single watt base unit using internationally defined conversion factors, so any from/to pair stays consistent.
Good to know
Converting kilowatts to horsepower is something you do constantly once you start comparing machinery across borders. Car spec sheets, generator nameplates, electric motor ratings, and HVAC compressors are often quoted in kilowatts in Europe and most of the world, while North American buyers, tradespeople, and enthusiasts still think in horsepower. Translating between the two lets you compare an EV's "150 kW" drive motor against a "201 hp" gasoline engine, or size a backup generator against the horsepower rating of the pump or saw it needs to run.
The two units come from different worlds. The kilowatt is the pure SI (metric) unit of power — 1,000 watts, named after James Watt himself. Horsepower is an older imperial workaround Watt invented to sell steam engines by comparing them to draft horses. The version this tool uses is mechanical (imperial) horsepower, where 1 hp = 745.7 watts, which is why 1 kW = 1.341022 hp. Note that metric horsepower (PS/CV/ch), common on European brochures, is slightly smaller at 735.5 W, so a "100 PS" engine is not identical to 100 of these horsepower.
For quick mental math, remember that one kilowatt is roughly one-and-a-third horsepower: multiply kW by 4 and divide by 3, or just add a third. So 75 kW is about 100 hp, and 100 kW lands near 134 hp. Going the other way, take horsepower times three-quarters to estimate kilowatts.
The most common mistake is mixing up the horsepower flavors — mechanical, metric, and electrical horsepower (746 W) all differ by a percent or two, which matters when you're near a regulatory or insurance threshold. A second pitfall is confusing power (kW) with energy (kWh): your electricity bill is in kilowatt-hours, and that figure cannot be converted to horsepower at all without also knowing time.
Frequently asked questions
How do you convert kilowatt to horsepower?
Multiply the number of kilowatts by 1.341022 to get horsepowers. For example, 1 kW = 1.341022 hp.
What is 1 kilowatt in horsepowers?
1 kilowatt equals 1.341022 horsepowers (1 kW = 1.341022 hp).
How many kilowatts are in 1 horsepower?
There are 0.7456999 kilowatts in 1 horsepower.
Is this converter free and private?
Yes. It runs entirely in your browser, so your inputs never leave your device, there is no sign-up, and it works offline once loaded.
Are the conversions exact?
Conversions use internationally defined factors and are exact where the definitions are exact (for example, 1 inch = 2.54 cm). Displayed results are rounded for readability.
People also ask
How many horsepower is 100 kW?
100 kW equals about 134.1 hp (100 × 1.341022 = 134.1022 hp). This is roughly the output of a small family car's engine.
What is 150 kW in horsepower?
150 kW is about 201.2 hp (150 × 1.341022 = 201.15 hp), a common rating for mid-range electric vehicle motors.
Is kW the same as horsepower?
No. The kilowatt is the metric (SI) unit of power and horsepower is an imperial unit. One kilowatt equals 1.341022 mechanical horsepower, so they measure the same thing in different units.
How do I convert kW to hp by hand?
Multiply the kilowatts by 1.341022, or for a fast estimate multiply by 1.34. For example, 50 kW × 1.341022 = about 67.05 hp.
What is the difference between metric horsepower and the horsepower in this converter?
This converter uses mechanical (imperial) horsepower at 745.7 W, so 1 kW = 1.341022 hp. Metric horsepower (PS) is defined as 735.5 W, so 1 kW = about 1.3596 PS — roughly 1.4% higher.
How many kW is 200 hp?
200 mechanical horsepower equals about 149.1 kW (200 × 0.7457 = 149.14 kW).
Why do EV motors use kW instead of horsepower?
Electric motors are rated in kilowatts because that is the SI unit used throughout the electrical industry and on global spec sheets. Manufacturers often list horsepower alongside it for markets that prefer it, using the 1.341022 factor.
Can I convert kWh to horsepower?
Not directly. A kilowatt-hour measures energy, while horsepower measures power (a rate). You can only convert kW to hp; converting kWh requires also knowing the time over which the energy is used.
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