Quick Answer
1 watt equals 0.00134102 horsepower. To convert watts to horsepower, multiply the value by this factor.
Key Facts
- Reverse: 1 horsepower = 745.7 watts.
Watts to Horsepower Converter
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1 W = 0.00134102 horsepower
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Watts to Horsepower Formula
Formula: value ÷ 745.7
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Watts to Horsepower Conversion Table
| Watts (W) | Horsepower (hp) |
|---|---|
| 1 W | 0.00134102 hp |
| 2 W | 0.00268204 hp |
| 5 W | 0.00670511 hp |
| 10 W | 0.0134102 hp |
| 25 W | 0.0335256 hp |
| 50 W | 0.0670511 hp |
| 100 W | 0.134102 hp |
| 250 W | 0.335256 hp |
| 500 W | 0.670511 hp |
| 1,000 W | 1.34102 hp |
Frequently Asked Questions
How do I convert watts to horsepower?
Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value ÷ 745.7.
What is the exact watts to horsepower conversion factor?
1 watt = 0.00134102 horsepower (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 horsepower = 745.7 watts.
What are some common watts to horsepower conversions?
1 W = 0.00134102 hp; 10 W = 0.0134102 hp; 100 W = 0.134102 hp. 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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