Power Converter
Convert between watts, kilowatts, horsepower, and BTU/hr. Perfect for engines, appliances, and electrical systems.
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🏎️ Common Power Ratings
| Item | Watts | Horsepower |
|---|---|---|
| Light bulb (LED) | 10 W | 0.013 HP |
| Microwave | 1,000 W | 1.34 HP |
| Small car engine | 75,000 W | 100 HP |
| Sports car engine | 300,000 W | 400 HP |
📚 About Power
Power measures the rate of energy transfer or work done per unit time. One horsepower equals 745.7 watts and was originally defined by James Watt as the power needed to lift 550 pounds one foot in one second, roughly equivalent to a horse's work capacity.
Watts (W) and kilowatts (kW) are the SI units for power. Your home appliances are rated in watts - a typical hair dryer uses 1,500W, while a laptop uses 50-100W. Understanding power helps estimate electricity costs and compare engine performance.