🔌 Power Converter
watts, kilowatts, horsepower and BTU/hr
About this calculator
Watts, kilowatts, horsepower (mechanical and metric — slightly different!), and BTU/hr. Enter a power value in any unit and convert across the set. Useful for sizing generators, comparing appliances, and decoding engine specs where horsepower figures get tossed around loosely. It also converts to BTU per hour for HVAC sizing.
Tip: a typical Canadian home has 100- or 200-amp service at 240 volts — that's 24 or 48 kW of available power, the ceiling for everything running at once.