Horsepower to Watts Converter
Convert horsepower to watts with a free calculator
How to Convert Horsepower to Watts
Formula: 1 hp = 745.7 W
Multiply your horsepower value by 745.7 to get the equivalent in watts. The conversion factor 745.7 is based on the internationally accepted definitions of both units.
Horsepower to Watts Reference Table
| Horsepower (hp) | Watts (W) |
|---|---|
| 1 hp | 745.7 W |
| 5 hp | 3728.5 W |
| 10 hp | 7,457 W |
| 25 hp | 18642.5 W |
| 50 hp | 37,285 W |
| 100 hp | 74,570 W |
| 500 hp | 372,850 W |
| 1000 hp | 745,700 W |
Related Conversions
Frequently Asked Questions
How many watts is 100 HP? +
100 HP equals 74,570 watts or 74.57 kW.
Are there different kinds of horsepower? +
Yes. Mechanical/imperial HP (745.7 W), metric HP (735.499 W), and electrical HP (746 W). This converter uses mechanical HP.
How many horsepower is a human? +
A healthy human can sustain about 0.1 HP (75 watts) for extended periods. Peak output during a sprint can reach about 1-2 HP briefly.