Quick Answer
1 horsepower equals 745.7 watts. To convert horsepower to watts, multiply the value by this factor.
Key Facts
- Reverse: 1 watt = 0.00134102 horsepower.
Horsepower to Watts Converter
Free instant hp → W converter. No signup, no uploads — everything is calculated privately in your browser.
1 hp = 745.7 watts
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Horsepower to Watts Formula
Formula: value × 745.7
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Horsepower to Watts Conversion Table
| Horsepower (hp) | Watts (W) |
|---|---|
| 1 hp | 745.7 W |
| 2 hp | 1,491.4 W |
| 5 hp | 3,728.5 W |
| 10 hp | 7,457 W |
| 25 hp | 18,642.5 W |
| 50 hp | 37,285 W |
| 100 hp | 74,570 W |
| 250 hp | 186,425 W |
| 500 hp | 372,850 W |
| 1,000 hp | 745,700 W |
Frequently Asked Questions
How do I convert horsepower to watts?
Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value × 745.7.
What is the exact horsepower to watts conversion factor?
1 horsepower = 745.7 watts (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 watt = 0.00134102 horsepower.
What are some common horsepower to watts conversions?
1 hp = 745.7 W; 10 hp = 7,457 W; 100 hp = 74,570 W. Use the full conversion table below for more reference values.
Why do car specs list both hp and PS?
They are two flavors of horsepower: mechanical horsepower (1 hp = 745.7 W) is standard in the US, while metric horsepower or Pferdestärke (1 PS = 735.5 W) is common in Europe. Because 1 hp ≈ 1.014 PS, a 300 PS engine is about 296 hp — close enough for marketing, but not identical.
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