Horsepower (US) to Watts Conversion
to
Horsepower (US)
hp
Result
Calculation steps
About this conversion
Intro
This page converts horsepower (us) (hp) to watts (W). Use it when you have a power value in horsepower (us) and need the equivalent in watts for specs, calculations, or engineering documentation.
Definition
Power is the rate of doing work or transferring energy. Quick context on watts: Watts (W) are the SI unit of power. They measure the rate of energy transfer or work done per second, and are commonly used for electrical devices, heaters, motors, and power supplies.
Formula: Horsepower (US) to Watts
watts = horsepower (us) × 745.69987158227
This converter uses watts as a consistent base. Multiply your horsepower (us) value by the conversion ratio to get watts. General form: watts = horsepower (us) × (745.69987158227 W per horsepower) ÷ (1 W per watt).
Worked examples
Example 1: 1 hp → 745.69987158227 W
- Start with 1 hp.
- Multiply by the conversion ratio (745.69987158227).
- 1 × 745.69987158227 = 745.69987158227 W.
Example 2: 5 hp → 3728.499357911351 W
- Start with 5 hp.
- Multiply by the conversion ratio (745.69987158227).
- 5 × 745.69987158227 = 3728.499357911351 W.
Example 3: 20 hp → 14913.997431645405 W
- Start with 20 hp.
- Multiply by the conversion ratio (745.69987158227).
- 20 × 745.69987158227 = 14913.997431645405 W.
Quick reference table
| From | To |
|---|---|
| 0.5 hp | 372.849935791135 W |
| 1 hp | 745.69987158227 W |
| 2 hp | 1491.39974316454 W |
| 5 hp | 3728.499357911351 W |
| 10 hp | 7456.998715822702 W |
| 20 hp | 14913.997431645405 W |
| 50 hp | 37284.993579113514 W |
| 100 hp | 74569.98715822703 W |
FAQs
How do I convert horsepower (us) to watts?
Use the formula: watts = horsepower (us) × 745.69987158227. Enter a value above and the converter will calculate it instantly.
How many watts are in 1 horsepower?
1 horsepower = 745.69987158227 watts.
What is Watts (W) used for?
Watts (W) are the SI unit of power. They measure the rate of energy transfer or work done per second, and are commonly used for electrical devices, heaters, motors, and power supplies.
Is watts a bigger unit than horsepower (us)?
For this direction (Horsepower (US) → Watts), the numeric result usually gets larger because 1 horsepower equals 745.69987158227 watts.
What does the symbol “W” mean in this result?
“W” is the standard symbol for watts. Your converted value is expressed in watts (W).
Can I convert horsepower (us) to energy (like joules or BTUs)?
Power is energy per time. If you also know the time duration, you can convert to energy using: energy = power × time (for example, watt-seconds = joules). This page specifically converts power units (Horsepower (US) → Watts).