Fundamentals
kW to HP Converter
A simple unit conversion to approximate mechanical horsepower.
02 / Result
Mechanical horsepower (approx.)
hp ≈ kW × 1000 / 745.6999
Method and boundaries
Mechanical hp ≈ kW × 1000 / 745.6999. The rounded factor is approximate. No motor efficiency, shaft output inference, equipment sizing or recommendation is included.
FAQ
What does this calculator compute?
It converts positive power in kW to approximate mechanical horsepower: hp ≈ kW × 1000 / 745.6999. The rounded factor is approximate.
Does it change the power basis?
No. The input power is carried through unchanged. Motor efficiency, shaft output, and equipment size are not inferred.
When should I not use it?
Do not use it to choose a motor or to claim an exact legal-unit conversion. It is only the approximate mechanical-horsepower factor.
Source records
NIST Federal Standard 376B (SRC-039)
Institution: NIST
Section: Section 5.2.13 approximate mechanical horsepower factor 745.6999 W/hp
URL on the calculation record: https://www.nist.gov/document/fs376-bpdf
Verification date: 2026-10-12
Status: review-required