HP to kW converter
Convert horsepower [hp] to kilowatt [kW], or vice versa.
kW = HP × 0.7457
For reverse: HP = kW × 1.34102. This uses mechanical horsepower.
- Enter horsepower in the From field
- Click Convert — result appears in kW
- Use ⇅ to reverse (kW → HP)
Horsepower
Definition: Horsepower (symbol: hp) is a unit of power with multiple definitions. Mechanical horsepower (used in this converter) = 550 foot-pounds per second = 745.69987 watts. It was originally defined by James Watt to compare the output of steam engines to draft horses.
Current use: Horsepower is primarily used in the United States and United Kingdom to rate the output of engines in cars, motorcycles, aircraft, and industrial equipment. Converting HP to kW is essential for international comparisons.
Kilowatt
Definition: A kilowatt (symbol: kW) is a unit of power equal to 1,000 watts. It is part of the International System of Units (SI). 1 kW = 1,000 J/s (joules per second).
Current use: The kilowatt is the standard unit of power in most countries for measuring engine output, electrical appliances, and industrial machinery. Most European and Asian car manufacturers rate engine power in kW.
HP to kW conversion table
| Horsepower [HP] | Kilowatts [kW] | Common search |
|---|---|---|
| 1 HP | 0.7457 kW | 1 hp to kw |
| 10 HP | 7.4570 kW | 10 hp to kw |
| 50 HP | 37.2850 kW | 50 hp to kw |
| 100 HP | 74.5700 kW | 100 hp to kw |
| 150 HP | 111.8550 kW | 150 hp to kw |
| 200 HP | 149.1400 kW | 200 hp to kw |
| 300 HP | 223.7100 kW | 300 hp to kw |
| 400 HP | 298.2800 kW | 400 hp to kw |
| 500 HP | 372.8500 kW | 500 hp to kw |
Frequently asked questions
How to convert HP to kW?
Multiply the HP value by 0.7457. For example, 100 HP × 0.7457 = 74.57 kW.
Is 1 kW equal to 1 HP?
No. 1 kW = 1.341 HP, and 1 HP = 0.7457 kW. A kilowatt is about 34% more powerful than one horsepower.
What is 100 HP in kW?
100 HP × 0.7457 = 74.57 kW.
What is 150 HP in kW?
150 HP × 0.7457 = 111.86 kW.
How many kW is 200 HP?
200 HP × 0.7457 = 149.14 kW.
What is the formula for HP to kW?
kW = HP × 0.74569987. This uses mechanical horsepower, the most common definition for cars and engines.
How many kW is 500 HP?
500 HP × 0.7457 = 372.85 kW.