Power Converter — Watts, Horsepower, BTU/hr, Kilowatts
The Power Converter converts between all major power units — watts, kilowatts, megawatts, horsepower (mechanical, metric, and electrical), BTU per hour, and more. Whether you are comparing engine specs, sizing electrical systems, or calculating energy consumption, this free tool converts between all power units instantly.
Frequently Asked Questions
1 mechanical horsepower (hp) = 745.7 watts. 1 metric horsepower (PS) = 735.5 watts. Car manufacturers outside the US typically use PS (Pferdestärke), which is slightly less than the US/UK hp.