Horsepower to Kilowatt (Horsepower to Kilowatt)
Result
0.7456998716 Kilowatt
Formula
Kilowatt = Horsepower × 0.7456998716
1 Horsepower = 0.7456998716 Kilowatt, and 1 Kilowatt = 1.34102209 Horsepower.
Fuel economy is converted through the US gallon (3.785411784 L) and imperial gallon (4.54609 L): L/100 km = 235.215 ÷ mpg (US). Power uses mechanical horsepower and metric horsepower (PS = 735.49875 W). Torque uses 1 lb·ft = 1.3558179 N·m.
Worked examples
- 1 Horsepower × 0.7456998716 = 0.74569987 Kilowatt
- 10 Horsepower × 0.7456998716 = 7.4569987 Kilowatt
- 100 Horsepower × 0.7456998716 = 74.569987 Kilowatt
Common mistakes
- L/100 km is inverse to mpg — lower is better — so it does not scale linearly: going from 10 to 20 mpg saves far more fuel than going from 40 to 50.
- UK and US mpg differ because the imperial gallon is 20% larger: 40 mpg (UK) is 33.3 mpg (US).
- Car makers in Europe and Japan usually quote PS, not horsepower; 100 PS is 98.6 hp.
Horsepower to Kilowatt table
| Horsepower (Horsepower) | Kilowatt (Kilowatt) |
|---|---|
| 1 | 0.74569987 |
| 2 | 1.4913997 |
| 5 | 3.7284994 |
| 10 | 7.4569987 |
| 20 | 14.913997 |
| 50 | 37.284994 |
| 100 | 74.569987 |
| 1,000 | 745.69987 |
The units
- Horsepower (Horsepower)
- A unit of automotive.
- Kilowatt (Kilowatt)
- A unit of automotive.
Sources for these factors
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy