Convert Horsepower to Kilowatt (hp to kW)
Instant precision conversion from Horsepower (hp) to Kilowatt (kW) in Power.
⚡ Direct Answer: 1 hp to kW
1 Horsepower (hp) equals exactly 0.7457 Kilowatt (kW).
To convert from Horsepower to Kilowatt, multiply the quantity by 0.7457 (or divide by 1.341022).
📐 How Horsepower (hp) and Kilowatt (kW) Relate
In metrology, power quantifies rate of energy transfer or work performed per unit time ($E/T$). Within this domain, Horsepower (hp) and Kilowatt (kW) originate from SI watts/kilowatts and imperial/mechanical horsepower. Mechanical horsepower is defined as 550 ft·lbf/s (approximately 745.69987 W).
Because both Horsepower and Kilowatt belong to the linear power domain, conversion between them is strictly proportional. The exact conversion factor (0.7457) guarantees zero precision drift across mathematical calculations.
🎯 Common Practical Applications
Automotive Engine Ratings & EV Comparisons
Converting traditional internal combustion horsepower into kilowatts for electric vehicle comparisons and EU taxation.
Industrial Electric Motor Specification
Replacing imperial factory motors and pump drives with metric three-phase industrial motors.
Marine Propulsion & Yacht Sizing
Standardizing inboard diesel engine power ratings across North American and European shipbuilders.
Reverse Conversion Option
Looking to calculate the reverse direction? Switch directly to our dedicated Kilowatt to Horsepower converter.
Horsepower to Kilowatt Conversion Table (1 to 1000)
| Horsepower (hp) | Kilowatt (kW) | Kilowatt (kW) | Horsepower (hp) |
|---|---|---|---|
| 1 hp | 0.7457 kW | 1 kW | 1.341022 hp |
| 2 hp | 1.4914 kW | 2 kW | 2.682044 hp |
| 3 hp | 2.2371 kW | 3 kW | 4.023066 hp |
| 5 hp | 3.7285 kW | 5 kW | 6.705109 hp |
| 10 hp | 7.457 kW | 10 kW | 13.410219 hp |
| 15 hp | 11.1855 kW | 15 kW | 20.115328 hp |
| 20 hp | 14.914 kW | 20 kW | 26.820437 hp |
| 25 hp | 18.6425 kW | 25 kW | 33.525546 hp |
| 50 hp | 37.285 kW | 50 kW | 67.051093 hp |
| 75 hp | 55.9275 kW | 75 kW | 100.576639 hp |
| 100 hp | 74.57 kW | 100 kW | 134.102186 hp |
| 250 hp | 186.425 kW | 250 kW | 335.255465 hp |
| 500 hp | 372.85 kW | 500 kW | 670.510929 hp |
| 1000 hp | 745.7 kW | 1000 kW | 1341.021859 hp |
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Frequently Asked Questions
How many Kilowatt in 1 Horsepower?
1 Horsepower (hp) equals exactly 0.7457 Kilowatt (kW). 1 Kilowatt (kW) equals approximately 1.341022 Horsepower (hp). Formula: hp ≈ kW × 1.34102186.
How to convert Horsepower to Kilowatt?
To convert from Horsepower to Kilowatt, multiply the quantity by 0.7457 (or divide by 1.341022). Mathematical formula: kW = hp × 0.7457.
What is an example calculation converting Horsepower to Kilowatt?
To convert 10 Horsepower to Kilowatt: multiply 10 by the conversion factor 0.7457 to get exactly 7.457 Kilowatt (kW).
How to convert back from Kilowatt to Horsepower?
To convert from Kilowatt to Horsepower, multiply by the inverse factor 1.341022 (or divide by 0.7457). Formula: hp = kW × 1.34102186.