Convert Horsepower to Kilowatts
Convert Horsepower to Kilowatts instantly. 1 Horsepower (hp) equals 0.7457 Kilowatts (kW).
Horsepower to Kilowatts conversion table
| Horsepower (hp) | Kilowatts (kW) |
|---|---|
| 1 hp | 0.7457 kW |
| 2 hp | 1.4914 kW |
| 3 hp | 2.2371 kW |
| 5 hp | 3.7285 kW |
| 10 hp | 7.457 kW |
| 20 hp | 14.914 kW |
| 50 hp | 37.285 kW |
| 100 hp | 74.57 kW |
| 500 hp | 372.8499 kW |
| 1,000 hp | 745.6999 kW |
1 Horsepower = 0.7457 Kilowatts · multiply Horsepower by 0.7457
About converting Horsepower to Kilowatts
Horsepower (hp) and Kilowatts (kW) are both units of power, so converting between them is a single multiplication: multiply your Horsepower figure by 0.7457. Ten Horsepower comes to 7.457 Kilowatts, and a hundred works out at 74.57 Kilowatts.
Rule of thumb: going from Horsepower to Kilowatts divides, so the figure always shrinks — it takes about 1.341 Horsepower to make a single Kilowatt. If your answer came out bigger, you have the conversion the wrong way round.
What is a Horsepower?
Horsepower is a marketing unit that became a standard. James Watt devised it to sell steam engines to mine owners who had never bought an engine but had bought plenty of horses: by measuring what a draught horse could actually lift over a working day, he could quote an engine as worth so many horses and let the buyer do the arithmetic. Mechanical or imperial horsepower is defined as exactly 550 foot-pounds-force per second, which is why it lands on no tidy figure in watts. Two and a half centuries after the horses left, it is still how cars, outboards and lawn tractors are advertised.
What is a Kilowatt?
A kilowatt is a thousand watts, the size at which power stops being about gadgets and starts being about infrastructure. It rates the things in a house that actually move the meter — kettles, ovens, showers, heat pumps, immersion heaters — and it is the unit of EV charging, where the kilowatt figure sets how fast a car charges while the battery’s kilowatt-hours set how far it goes. It is also the legal unit of engine power in the European Union: manufacturers must state kW on a vehicle’s paperwork, even though the marketing beside it still leads with horsepower.
To put both in perspective: a family hatchback makes something like 120 horsepower, while an electric kettle draws a couple of kilowatts.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Kilowatts to Horsepower converter, or browse all Power converters.
Frequently asked questions
How many Kilowatts are in one Horsepower?
There are 0.7457 Kilowatts in one Horsepower.
How do I convert Horsepower to Kilowatts?
Multiply the number of Horsepower by 0.7457. For example, 10 Horsepower = 7.457 Kilowatts.
What is 100 Horsepower in Kilowatts?
100 Horsepower is equal to 74.57 Kilowatts.
How do I convert Kilowatts to Horsepower?
Multiply the Kilowatts value by 1.341 (or divide by 0.7457).
Is this Horsepower to Kilowatts conversion exact?
The definition is exact — Horsepower and Kilowatts are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Horsepower?
Horsepower is a marketing unit that became a standard. James Watt devised it to sell steam engines to mine owners who had never bought an engine but had bought plenty of horses: by measuring what a draught horse could actually lift over a working day, he could quote an engine as worth so many horses and let the buyer do the arithmetic. Mechanical or imperial horsepower is defined as exactly 550 foot-pounds-force per second, which is why it lands on no tidy figure in watts. Two and a half centuries after the horses left, it is still how cars, outboards and lawn tractors are advertised.
What is a Kilowatt?
A kilowatt is a thousand watts, the size at which power stops being about gadgets and starts being about infrastructure. It rates the things in a house that actually move the meter — kettles, ovens, showers, heat pumps, immersion heaters — and it is the unit of EV charging, where the kilowatt figure sets how fast a car charges while the battery’s kilowatt-hours set how far it goes. It is also the legal unit of engine power in the European Union: manufacturers must state kW on a vehicle’s paperwork, even though the marketing beside it still leads with horsepower.