Horsepower to Kilowatts Converter
Enter a value to instantly convert between power units.
1 Horsepower (mech) = 0.7457 Kilowatt
Key Formulas
Kilowatt → Horsepower (mech)
hp = kW × 1.34102Horsepower (mech) → Kilowatt
kW = hp × 0.7457Watt → Kilowatt
kW = W × 0.001Kilowatt → Watt
W = kW × 1000Formula
kW = hp × 0.745700Engine specs for US and UK vehicles are quoted in horsepower, while European regulations require kW. When comparing a 300 hp American muscle car to a 220 kW European sports car, converting to a common unit is essential. Industrial motor catalogues list both — a 50 hp motor is 37.3 kW. This conversion is also needed when calculating fuel economy targets, emissions regulations, and specifying power-to-weight ratios in engineering documents.
Source: NIST SP 811, Table B.8
Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
A 100 hp car engine = 74.6 kW — a common entry-level power rating for compact cars in Europe.
100 hp = 74.6 kW
A 200 hp sports car = 149.1 kW — comparable to a Tesla Model 3 Standard Range, which delivers similar performance from its electric motor.
200 hp = 149.1 kW
A 50 hp industrial motor = 37.3 kW — a standard NEMA frame size used for air compressors and conveyors.
50 hp = 37.3 kW
A 450 hp locomotive diesel engine = 335.6 kW — a typical rating for a switcher locomotive used in rail yards.
450 hp = 335.6 kW