Multiply hp by 0.7456998716 to get kW. The displayed factor is rounded; the calculator uses the full stored conversion factor.
The input is mechanical horsepower. Engine output ratings can also depend on test conditions; unit conversion alone does not compare those conditions.
Worked example
100 hp = 74.5699871582 kW. To reverse it, enter the unrounded output and select Swap units. Round only the final result; converting an already-rounded result back may not reproduce the original exactly.
Conversion table in both directions
hp and kW reference values
Input
hp → kW
kW → hp
1
0.7456998716
1.3410220896
2
1.4913997432
2.6820441792
5
3.7284993579
6.705110448
10
7.4569987158
13.410220896
20
14.9139974316
26.8204417919
25
18.6424967896
33.5255522399
50
37.2849935791
67.0511044798
100
74.5699871582
134.1022089595
500
372.8499357911
670.5110447975
1000
745.6998715823
1,341.022089595
Last updated . Results are estimates for informational purposes only.