Power Converter
Convert between units of power, from watts and kilowatts to mechanical and metric horsepower. The result updates as you type.
About Power Converter
This power converter covers watts, kilowatts, and megawatts alongside mechanical and metric horsepower and BTU per hour, which is handy for engines, appliances, and heating or cooling systems.
Frequently Asked Questions
How many watts are in one horsepower?
One mechanical horsepower is about 745.7 watts. Metric horsepower is slightly less, at about 735.5 watts.
What is the difference between mechanical and metric horsepower?
They are two slightly different definitions. Mechanical horsepower is common in the US and UK, while metric horsepower is used in much of Europe.
Is the tool private and free?
Yes. Every conversion runs in your browser, nothing is uploaded, and the tool is free with no signup.
About Matt George
I'm Matt George, a software engineer in the startup space. I run my own shop building software for early-stage founders, and I love making free tools and experiences that people actually use. Enjoy using Power Converter!