Convert between watts (W) and metric horsepower (PS/Pferdestärke) using the standard: 1 W = 0.0013596216 PS , ideal for European engines and machinery.
Conversion Standard:
1 Watt (W) = 0.0013596216 Metric Horsepower (PS) | 1 PS ≈ 735.49875 W
PS = W × 0.0013596216 | W = PS ÷ 0.0013596216 (≈ PS × 735.49875)
Example: 735.5 W × 0.0013596216 ≈ 1 PS
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Watts (SI unit) and Metric Horsepower (PS) – key power units for global engineering, with PS common in Europe.
Practical examples using 1 W = 0.0013596216 PS:
| Device/Object | Watts (W) | Metric Horsepower (PS) |
|---|---|---|
| Electric drill | 500-1000 W | 0.68-1.36 PS |
| Small car engine (EU) | 73,550-110,325 W | 100-150 PS |
| Mid-size SUV (EU) | 147,100-220,650 W | 200-300 PS |
| Lawn tractor | 14,710-22,065 W | 20-30 PS |
Precise conversions using 1 W = 0.0013596216 PS (1 PS = 735.49875 W)
| Watts (W) | = | Metric Horsepower (PS) | Typical EU Application |
|---|---|---|---|
| 100 W | = | 0.13596 PS | Small power tools |
| 500 W | = | 0.67981 PS | Electric lawnmowers |
| 735.49875 W | = | 1 PS | Base unit reference |
| 1,000 W | = | 1.35962 PS | Portable generators |
| 10,000 W | = | 13.59622 PS | Small industrial motors |
| 73,549.875 W | = | 100 PS | Compact car engines (EU) |
Calculation standard: 1 Watt = 0.0013596216 Metric Horsepower (PS) | 1 PS = 735.49875 Watts.
About watts, metric horsepower (PS), and the 1 W = 0.0013596216 PS standard
Use the direct multiplication formula (core standard):
Metric Horsepower (PS) = Watts (W) × 0.0013596216
Example: Convert 150,000 W to PS:
150,000 W × 0.0013596216 = 203.94324 PS
Reverse calculation (PS to W): Divide by 0.0013596216 (or multiply by 735.49875 for simplicity).
PS is dominant in Europe and parts of Asia for practical reasons:
1 PS = 735.49875 W, while 1 mechanical hp = 745.7 W – ~1.3% difference.
Yes – it’s derived from the official metric horsepower definition:
1 PS = 75 kilogram-force·meters per second (kgf·m/s)
1 kgf·m/s = 9.80665 W
1 PS = 75 × 9.80665 = 735.49875 W
1 W = 1 ÷ 735.49875 = 0.0013596216 PS (exact value)
This precision ensures consistency across engineering, manufacturing, and regulatory compliance.
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