Kilowatt to Horsepower (mechanical) Converter
Power · unit-converter
Convert Kilowatt to Horsepower (mechanical) with a fixed input and output unit, step-by-step formula line, and reference tables. Linear units use SI watt definitions; mechanical hp uses 550 ft·lbf/s; BTU/h uses the IT BTU; dBm/dBW are logarithmic relative to 1 mW and 1 W. The full Power Converter also includes PS/CV, TR, kVA/MVA, and ft·lb/s.
Calculator
From: Kilowatt (kw)
To: Horsepower (mechanical) (hp)
About Kilowatt
One kilowatt is 1,000 W. Motor, heater, and grid-scale loads are often rated in kW.
About Horsepower (mechanical)
Mechanical horsepower here is the US definition: 550 ft·lbf/s ≈ 745.70 W. Automotive and industrial specs often cite hp.
How to convert kilowatts to horsepower (mechanical, 550 ft·lb/s)
1 kilowatt is equal to 1.34102208959503 horsepower (mechanical) when both are expressed in watt-equivalents:
1 kw = (1,000 W ÷ 745.6998715822702 W) hp = 1.34102208959503 hp
Each kilowatt is defined as 1,000 W and each horsepower (mechanical) as 745.6998715822702 W in this tool, so one kw equals 1,000 ÷ 745.6998715822702 hp = 1.34102208959503 hp.
Let d(kw) be the numeric value in Kilowatt (kw), and d(hp) the value in Horsepower (mechanical) (hp). Then:
d(hp) = d(kw) × (1,000 / 745.6998715822702)
Equivalently, divide by how many kw fit into one hp (watts per hp divided by watts per kw):
d(hp) = d(kw) ÷ 0.74569987158227
Or: horsepower (mechanical) = kilowatt ÷ 0.74569987158227
Examples
Example #1: Convert 1 kw to horsepower (mechanical)
1 kw = 1 kw × (1,000/745.6998715822702) hp = 1.3410220896 hp
1 kw = 1 kw ÷ 0.74569987158227 = 1.3410220896 hp
Intermediate watts: 1,000 W
Example #2: Convert 10 kw to horsepower (mechanical)
10 kw = 10 kw × (1,000/745.6998715822702) hp = 13.410220896 hp
10 kw = 10 kw ÷ 0.74569987158227 = 13.410220896 hp
Intermediate watts: 10,000 W
Summary
To convert Kilowatt to Horsepower (mechanical), multiply the value in kw by the ratio of watts per kw divided by watts per hp. Equivalently: value_hp = value_kw × (1000 / 745.6998715822702). Numerically, 1 kw equals 1.3410220895950278 hp.
Relationship context
You are converting between SI / decimal power (watts and prefixes) (Kilowatts) and mechanical power (horsepower, ft·lb/s) (Horsepower (mechanical, 550 ft·lb/s)). All linear values are mapped through watts first. The numeric factor is 1.341022e+0.
Conversion tables
| Kilowatt (kw) | Horsepower (mechanical) (hp) |
|---|---|
| 0.1 | 0.134102209 |
| 1 | 1.3410220896 |
| 2 | 2.6820441792 |
| 3 | 4.0230662688 |
| 4 | 5.3640883584 |
| 5 | 6.705110448 |
| 6 | 8.0461325376 |
| 7 | 9.3871546272 |
| 8 | 10.7281767168 |
| 9 | 12.0691988064 |
| Kilowatt (kw) | Horsepower (mechanical) (hp) |
|---|---|
| 10 | 13.410220896 |
| 20 | 26.8204417919 |
| 30 | 40.2306626879 |
| 40 | 53.6408835838 |
| 50 | 67.0511044798 |
| 60 | 80.4613253757 |
| 70 | 93.8715462717 |
| 80 | 107.281767168 |
| 90 | 120.691988064 |
| 100 | 134.10220896 |