Convert Horsepower (mechanical) to Metric Horsepower
hp to PS · power conversion
What are horsepower (mechanical) and metric horsepower?
Mechanical horsepower equals about 745.7 watts, the traditional measure of engine output. Metric horsepower (PS) is about 735.5 watts, used in European car specifications. For reference: a typical car engine makes 100–150 kW (about 134–201 hp).
How to convert horsepower (mechanical) to metric horsepower
1 hp = 1.01387 PS. To convert, multiply the number of horsepower (mechanical) by 1.01387. For example, 5 hp = 5.06935 PS, and 20 hp = 20.2774 PS. To go the other way, multiply metric horsepower by 0.98632 (since 1 PS = 0.98632 hp).
Horsepower (mechanical) to Metric Horsepower conversion table
| Horsepower (mechanical) (hp) | Metric Horsepower (PS) |
|---|---|
| 1 | 1.01387 |
| 10 | 10.1387 |
| 100 | 101.387 |
| 500 | 506.935 |
| 1,000 | 1,013.87 |
| 2,000 | 2,027.74 |
| 5,000 | 5,069.35 |
FAQ
What is 1 hp in PS?
1 hp = 1.01387 PS. To convert any amount, multiply the number of horsepower (mechanical) by 1.01387.
How do I convert metric horsepower back to horsepower (mechanical)?
Go the other way: 1 PS = 0.98632 hp, so multiply metric horsepower by 0.98632 to get horsepower (mechanical).
Is a horsepower (mechanical) bigger than a metric horsepower?
Yes — 1 hp is the larger unit, equal to 1.01387 PS.
Are these power conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.