How many kilowatts are in one horsepower?
One mechanical horsepower equals 0.7456998715823 kW.
Convert Horsepower (mechanical) (hp) to Kilowatt (kW) instantly.
Formula
value × 0.745699871582
| Sample | Converted |
|---|---|
| 1 hp | 0.7457 kW |
| 5 hp | 3.728499 kW |
| 10 hp | 7.456999 kW |
| 100 hp | 74.569987 kW |
| 1,000 hp | 745.699872 kW |
Convert mechanical horsepower to kilowatts when an engine, motor, pump, or machine rating needs to be compared with SI electrical and equipment power values.
Horsepower remains common in machinery and engine ratings, while kilowatts are common in SI and electrical documentation.
The conversion helps compare the same power rating across mechanical and electrical unit systems.
A value of 3 hp equals about 2.23710 kW.
Use kW when matching electrical plans, international equipment sheets, generator ratings, or SI calculations.
Use hp when the source is an engine, pump, compressor, fan, or mechanical equipment label.
For electric motors, distinguish rated output horsepower from electrical input kilowatts before sizing wiring or power supply equipment.
Horsepower is widely recognized in mechanical equipment.
Kilowatts are widely used in electrical and SI specifications.
Converting hp to kW makes it easier to compare motors, pumps, compressors, and engines across documents.
A horsepower value may describe shaft output.
A kilowatt value may describe electrical input or mechanical output depending on the label.
Use efficiency data when turning a unit conversion into an equipment sizing decision.
This page uses mechanical horsepower.
That is common in many US machinery references.
Confirm the definition when comparing with metric horsepower ratings or specialized boiler horsepower values.
Definition: Mechanical horsepower is a power unit equal to 745.6998715823 watts.
History/Origin: Horsepower originated as a practical way to compare engine output with animal work rates and remains common in mechanical ratings.
Current use: hp is used for engines, electric motors, pumps, compressors, fans, vehicles, and machinery specifications.
Definition: A kilowatt is an SI power unit equal to 1000 watts.
History/Origin: Kilowatts became a practical scale for machinery, electrical systems, appliances, and medium-sized power ratings.
Current use: kW is used for motors, generators, appliances, EV chargers, HVAC equipment, solar arrays, and electrical load planning.
| Horsepower (mechanical) [hp] | Kilowatt [kW] |
|---|---|
| 0.01 hp | 0.007457 kW |
| 0.1 hp | 0.07457 kW |
| 1 hp | 0.7457 kW |
| 2 hp | 1.4914 kW |
| 5 hp | 3.728499 kW |
| 10 hp | 7.456999 kW |
| 20 hp | 14.913997 kW |
| 50 hp | 37.284994 kW |
| 100 hp | 74.569987 kW |
1 hp = 0.7457 kW
1 kW = 1.341022 hp
Formula: value × 0.745699871582
Example: 15 hp = 11.185498 kW
Precision note: This converter uses mechanical horsepower: 1 hp = 0.7456998715823 kW. Metric horsepower and other definitions differ slightly.
One mechanical horsepower equals 0.7456998715823 kW.
10 hp equals about 7.45699872 kW.
No. This converter uses mechanical horsepower, where 1 hp equals 745.6998715823 W.