Hectowatt is 100 watt units.
Hectowatts to Metric horsepowers Converter — hW to PS
Convert Hectowatt (hW) to Metric horsepower (PS) using the exact conversion factor (1 hectowatt = 0.1359621617 metric horsepower). See the formula, worked examples, conversion table, history, and common uses.
Hectowatts to Metric horsepowers converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Metric horsepower.
Result = input x 100 / 735.49875.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Hectowatts to Metric horsepowers
Hectowatt and Metric horsepower both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Hectowatt is 100 watt units, and metric horsepower.
Formula
metric horsepowers = hectowatts × 0.13596216173
This factor comes from each unit's defined relationship to the category's base unit: 1 hectowatt equals 100 base units, and 1 metric horsepower equals 735.49875 base units, so dividing one by the other gives the direct hectowatt-to-metric horsepower factor of 0.13596216173.
Simple example
1 hW × 0.1359621617 = 0.1359621617 PS
1 hectowatt = 0.1359621617 metric horsepowers.
Real-world example
100 hW × 0.1359621617 = 13.59621617 PS
100 hectowatts = 13.59621617 metric horsepowers.
Conversion table
| Hectowatt (hW) | Metric horsepower (PS) |
|---|---|
| 1 hW | 0.1359621617 PS |
| 10 hW | 1.359621617 PS |
| 50 hW | 6.798108087 PS |
| 100 hW | 13.59621617 PS |
| 500 hW | 67.98108087 PS |
| 1,000 hW | 135.9621617 PS |
Reverse conversion: Metric horsepower to Hectowatt
0.1359621617 PS × 7.3549875 = 0.9999999998 hW
0.1359621617 metric horsepowers = 0.9999999998 hectowatts.
hectowatts = metric horsepowers × 7.3549875
For a page dedicated to this direction, see Metric horsepower to Hectowatt.
Understanding the Hectowatt (hW)
Hectowatt is 100 watt units.
Understanding the Metric horsepower
Metric horsepower (PS) measures power. Metric horsepower (PS/CV) is defined as exactly 735.49875 watts, the power to raise 75 kilograms one meter per second. It is classified as a Non-SI unit (metric, automotive).
Where it's used: Continental Europe, Japan, and other metric-system automotive markets
Uses of the Metric horsepower today
- European and Japanese vehicle engine power ratings (often shown as PS or CV)
- Motor and machinery power specifications in metric countries
History of the Metric horsepower
Metric horsepower emerged in continental Europe in the 19th century as engineers sought a metric-system analog to Watt's English horsepower, defining it via a round figure (75 kgf·m/s) convenient in metric calculations. It remains the standard automotive power unit across much of Europe and Asia, labeled PS (German 'Pferdestärke') or CV (French/Italian 'cheval-vapeur').
Historical origin. Metric horsepower was not the invention of a single named person; it developed through the process described above.
Metric horsepower — sources
- NIST Special Publication 811 — Documents the exact watt-equivalence of metric horsepower.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many metric horsepowers are in 1 hectowatt?
1 hectowatt equals 0.1359621617 metric horsepowers, using the exact defined conversion factor rather than an estimate.
How do I convert hectowatt to metric horsepower?
Multiply the hectowatt value by 0.1359621617. The converter above does this instantly to whatever precision you set.
How do I convert metric horsepower back to hectowatt?
Use the reverse factor: 1 metric horsepower equals 7.3549875 hectowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectowatt?
Hectowatt (hW) is a unit of engineering.
What is a metric horsepower?
Metric horsepower (PS) measures power. Metric horsepower (PS/CV) is defined as exactly 735.49875 watts, the power to raise 75 kilograms one meter per second. It is classified as a Non-SI unit (metric, automotive).
Is the hectowatt to metric horsepower conversion exact?
Yes. Metric horsepower (PS/CV) is defined as exactly 735.49875 watts, the power to raise 75 kilograms one meter per second. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.