Calculate horsepower from force, distance, and time, or convert between watts, kilowatts, horsepower types, and BTU/h.
Power = Force × Distance / Time — how much work is done per unit of time. This calculator converts the result into watts first, then into common horsepower and kilowatt equivalents.
Mechanical (imperial) horsepower, metric horsepower (PS/CV), electrical horsepower, and boiler horsepower are all slightly different historical definitions — they're close but not identical (745.7 W vs. 735.5 W vs. 746 W respectively), which matters when comparing engine ratings across regions or industries.
It varies by region — US manufacturers typically use mechanical horsepower, while many European manufacturers rate engines in metric horsepower (PS).
BTU per hour is common for rating heating and cooling equipment (like air conditioners and furnaces) rather than mechanical engines.
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