⚡ Power
horsepower to watts Converter
Convert horsepower to watts instantly with a reference conversion table.
Quick answer: To convert horsepower to watts, multiply by 745.7. For example, 1 horsepower = 745.7 watts. Use the calculator below for any value.
horsepower to watts
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Common conversions
| horsepower | watts |
|---|
Formula:
How to convert horsepower to watts
1
Enter your value
Type the number of horsepower you want to convert into the left box. The result in watts appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — watts to horsepower. Your current value carries across so you don't have to re-enter anything.
3
About horsepower and watts
horsepower and watts are common power measurements.
💡 Did you know?
1 hp = 745.7 W (mechanical, used in the UK and US). Metric horsepower (PS) is 735.5 W — used by most European car manufacturers. A '300 PS' German car has 296 hp in UK/US terms.
📊 Common conversions at a glance
| horsepower | watts |
|---|---|
| 0.1 | 74.57 |
| 0.5 | 372.9 |
| 1 | 745.7 |
| 1.34 | 999.2 |
| 2 | 1491 |
| 5 | 3728 |
Reviewed for 2026. horsepower ↔ watts conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.