Convert horsepower to metric horsepower
Enter a value in horsepower (hp) to get metric horsepower (PS). One horsepower (mechanical) is 1.0139 metric horsepower; one metric horsepower is 0.98632 horsepower.
How to use the Horsepower (mechanical) to metric horsepower
- Type the number of horsepower.
- Click Convert.
- Read the result in metric horsepower, plus the same value in every other power unit.
hp to PS formula
metric horsepower = horsepower × 1.0139. To go the other way, horsepower = metric horsepower × 0.98632 (see metric horsepower to horsepower).
Worked example
12 hp × 1.0139 = 12.1664 PS.
Horsepower to metric horsepower conversion table
| Horsepower | Metric horsepower |
|---|---|
| 0.1 hp | 0.101387 PS |
| 0.5 hp | 0.506935 PS |
| 1 hp | 1.0139 PS |
| 2 hp | 2.0277 PS |
| 3 hp | 3.0416 PS |
| 5 hp | 5.0693 PS |
| 10 hp | 10.1387 PS |
| 20 hp | 20.2774 PS |
| 25 hp | 25.3467 PS |
| 50 hp | 50.6935 PS |
| 100 hp | 101.387 PS |
| 250 hp | 253.4674 PS |
| 500 hp | 506.9348 PS |
| 1,000 hp | 1,013.87 PS |
About the horsepower (mechanical)
Exactly 745.7 W. Car engines in the USA and UK.
About the metric horsepower
735.5 W, about 1.4% smaller than mechanical horsepower. Car engines in Germany, Japan and much of Europe.
Related conversions
metric horsepower to horsepower · horsepower to watts · horsepower to kilowatts · any unit.
Frequently asked questions
How many metric horsepower in a horsepower (mechanical)?
1.0139 metric horsepower.
How many horsepower in a metric horsepower?
0.98632 horsepower.
Is the factor exact?
The factor 1.0139 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.