Horsepower to metric horsepower
Type a value in horsepower to see it in metric horsepower straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the horsepower box.
- Read the result in metric horsepower as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
PS = hp × 1.013869665
Multiply the value in horsepower by 1.013869665 to get metric horsepower.
Example
To convert 25 hp to metric horsepower: 25 × 1.013869665 = 25.3467 PS.
Conversion table
| Horsepower (hp) | Metric horsepower (PS) |
|---|---|
| 1 | 1.01387 |
| 2 | 2.02774 |
| 3 | 3.04161 |
| 5 | 5.06935 |
| 10 | 10.1387 |
| 20 | 20.2774 |
| 25 | 25.3467 |
| 50 | 50.6935 |
| 100 | 101.387 |
| 250 | 253.467 |
| 500 | 506.935 |
| 1,000 | 1,013.87 |
About the units
- Horsepower
- Mechanical (imperial) horsepower is 550 foot-pounds-force per second, exactly 745.69987158227022 watts, the figure used in US car specifications.
- Metric horsepower
- Metric horsepower (PS or CV) is 75 kilogram-force meters per second, exactly 735.49875 watts, used in European and Japanese car specifications.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many metric horsepower are in one horsepower?
1 hp = 1.01387 PS exactly.
How do I convert horsepower to metric horsepower?
Use PS = hp × 1.013869665. For example, 25 hp = 25.3467 PS.
How many horsepower are in one metric horsepower?
1 PS = 0.98632 hp.
What is the difference between mechanical and metric horsepower?
Mechanical horsepower is about 745.7 watts and is used in the US, while metric horsepower (PS) is 735.5 watts and is used in Europe and Japan. The same engine therefore shows a PS figure about 1.4% higher.
How many kilowatts is one ton of refrigeration?
One ton of refrigeration is 12000 BTU per hour, about 3.517 kW of cooling capacity. That is cooling output, not electricity use; the unit draws less power depending on its efficiency.