All Power Units

How to Convert Power Units?

Power measures the rate at which energy is transferred or converted. This converter uses standard conversion factors to instantly convert between watts, kilowatts, megawatts, horsepower, BTU per hour, and foot-pounds per second.

Simply enter a value, select your source unit, and choose the target unit. The converter calculates all unit equivalents simultaneously, showing you the complete conversion table.

Units

Watt (W)

The watt is the SI unit of power, defined as one joule per second. It's used universally in electrical applications, from small electronics (smartphone chargers use 5-20W) to household appliances (microwave ovens use 700-1200W).

Kilowatt (kW)

Equal to 1,000 watts, the kilowatt is commonly used to express the power of electric motors, heating systems, and home energy consumption. A typical home uses 1-2 kW on average, while electric vehicles charge at 7-22 kW.

Megawatt (MW)

Equal to 1,000,000 watts, the megawatt measures large-scale power generation. A single wind turbine produces 2-3 MW, while nuclear power plants generate 500-1,500 MW per reactor.

Horsepower (hp)

Originally defined by James Watt to compare steam engines to draft horses, one mechanical horsepower equals approximately 745.7 watts. It remains the standard unit for rating car engines, with typical vehicles ranging from 100-400 hp.

BTU per Hour (BTU/h)

The British Thermal Unit per hour measures heating and cooling capacity in HVAC systems. Air conditioners are rated in BTU/h, with window units typically providing 5,000-25,000 BTU/h depending on room size.

Common Power Conversions