CalcOS

CalcOS · Reference-grade conversion

Kilowatts to Horsepower Converter

Convert kilowatts to horsepower using the explicitly named mechanical horsepower definition of 550 ft·lbf/s. Every result uses governed BIPM and NIST definitions.

FamilyPower
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Set the units

Converted value1.341 hp(I)

1 kW in mechanical horsepower (550 ft·lbf/s)

How to convert kilowatts to horsepower

Useful when comparing SI power ratings with mechanical horsepower specifications. This page uses mechanical horsepower—exactly 550 international foot pound-force per second.

hp(I) = kW × 1.3410220896

Worked example: 1 kW = 1.3410220896 hp(I).

Kilowatts to Horsepower conversion table

kilowatt (kW)mechanical horsepower (550 ft·lbf/s) (hp(I))
11.3410220896
56.70511044798
1013.410220896
2533.5255522399
5067.0511044798
100134.10220896

Which horsepower does this page use?

The benchmark “hp” intent is resolved explicitly as mechanical horsepower based on 550 ft·lbf/s. It does not silently substitute metric horsepower, electrical horsepower, or boiler horsepower.

Related power conversion

Sources: NIST SP 811 Appendix B.9 and the BIPM SI Brochure. See the complete Power Converter guide.