Power Converter — Free Online Tool
Convert power units online for free. Supports watts, kilowatts, megawatts, horsepower, BTU/hour, and calories per second. Instant unit conversion.
About Power Converter
Power conversion is needed in electrical engineering, automotive performance, HVAC systems, physics, and energy consumption calculations. Our power converter handles all major units: watts and kilowatts (electrical and metric), megawatts (utility scale), mechanical horsepower, metric horsepower, BTU per hour (heating and cooling), and calories per second. Enter any value and see all equivalents instantly. Useful for comparing motor power, understanding appliance energy ratings, HVAC sizing, and generator capacity planning.
Frequently Asked Questions
How many watts in a kilowatt?
1 kilowatt = 1000 watts.
How many watts in one horsepower?
1 mechanical horsepower = 745.7 watts. 1 metric horsepower = 735.5 watts.
What is BTU/hour used for?
BTU/hour measures heating and cooling power for air conditioners, heaters, and HVAC systems.
How many BTU/hr in one kilowatt?
1 kilowatt = 3412.14 BTU/hour.
How do I convert horsepower to kilowatts?
Multiply horsepower by 0.7457 to get kilowatts. For example, 200 hp = 149.1 kW.