Power Converter
Convert watts, kilowatts, horsepower and metric PS with exact factors.
=
How to use Power Converter
- Enter the power value in the “From” field — for example 150 for a 150 PS engine.
- Select its unit in the first dropdown (Watt, Kilowatt, Horsepower, Metric hp…).
- Select the unit you want in the second dropdown — the result appears instantly.
- Click the swap button to reverse the conversion direction in one tap.
What is Power Converter?
A power converter translates rates of energy use between units — watts to horsepower, kilowatts to PS, or megawatts to kilowatts. Power is energy per time: one watt is one joule per second. Where energy (joules, kWh) measures a quantity, power measures how fast it flows — the difference between a battery's capacity and its output.
Horsepower comes in two flavors this tool keeps separate: mechanical horsepower (745.7 W), the US standard for engines, and metric horsepower or PS (735.5 W), used across Europe and Japan for car specs. They differ by about 1.4% — small, but enough to matter in a spec sheet.
About the Power Converter
This converter covers six units — watt, kilowatt, megawatt, mechanical horsepower (hp), metric horsepower (PS) and foot-pounds per second — converting between any pair instantly.
The classic use is car specs: a European car listed at 150 PS has 110 kW, which is 148 hp on an American spec sheet. It also handles household and industrial jobs: a 2,000 W kettle is 2 kW; a 5 hp pump motor draws at least 3.73 kW; a 50 MW power plant serves roughly 40,000 homes. Anchors: 1 hp = 745.7 W, 1 PS = 735.5 W, 1 kW = 1.341 hp = 1.360 PS.
Conversions use exact definitions and run entirely in your browser.