Horsepower to KW Converter
Convert between horsepower and kilowatts for all four horsepower types — mechanical, metric/PS, electric, and boiler. Bidirectional conversion with all-types comparison table.
Loading Tool...
Applications
Convert horsepower to kilowatts and vice versa for all four horsepower types — mechanical (engine power), metric/PS (European engine ratings), electric (motor ratings), and boiler (steam generation). Useful for automotive diagnostics, engine tuning, motor specifications, and power plant operations.
Conversion Formulas
Mechanical HP: 1 hp(I) = 0.7457 kW. Metric/PS: 1 hp(M) = 0.73549875 kW. Electric HP: 1 hp(E) = 0.746 kW. Boiler HP: 1 hp(S) = 9.8095 kW. For hp to kW: kW = hp × factor. For kW to hp: hp = kW ÷ factor.
Fun Fact: James Watt originally defined horsepower in the 1780s as the amount of work a horse could do over a minute — 33,000 ft·lb per minute — which equals approximately 0.7457 kW. Modern dynamometers still use this unit for rating engine power!
Related Tools
View all toolsRoman to Integer
Convert Roman Numerals back to standard decimal numbers. Decipher ancient dates and numbers.
Cooking Measurement Converter
Convert between volume (cups, tbsp, tsp, ml, fl oz), weight (g, oz), and ingredient amounts for cooking and baking. Includes density table for water, milk, flour, sugar, butter, oil, and honey.
Concrete Calculator
Estimate the amount of concrete needed for slabs, footings, and columns. Calculate bags required for your construction project.
Concrete Bag Calculator
Estimate the number of pre-mixed concrete bags (60 lb or 80 lb) needed for slabs, footings, posts, and small pours. Enter dimensions, get bag count, volume in cu ft and cu yd.
Acceleration Converter
Convert acceleration units like m/s², g-force, and ft/s². Physics and automotive engineering tool.
XML to CSV Converter
Convert XML data to CSV format. Export your data for spreadsheet analysis.