horsepower

Mechanical hp ≈ 745.6999 W; metric hp ≈ 735.4988 W; other named conventions also exist

horsepower covers several documented traditions, each with its own value. Choose a variant below to see a figure.

The name became an enduring engineering way to express power, but later technical practice produced several distinct definitions under the same everyday label.

Modern use is context-dependent and varies by region or measurement system.