1. How to convert PS to hp
The conversion is a single multiplication: hp = PS × 0.98632007062. Both units are defined
against the same base — the watt (W) — so the factor is fixed and the result
is exact to the precision shown.
Worked at the two values people ask for most: 1 PS = 0.98632007 hp and
100 PS = 98.632007 hp. Going the other way, PS = hp × 1.01386966542, so
1 hp = 1.0138697 PS.
Results are given to eight significant figures. That is more precision than most jobs need — for a rough figure, treat 1 PS as about 0.98632007 hp and adjust — but rounding early and multiplying afterwards is how a small error becomes a visible one, so the full figure is what the converter carries.
2. Metric horsepower to Horsepower conversion table
| Metric horsepower (PS) (PS) | Horsepower (mechanical) (hp) |
|---|---|
| 1 PS | 0.98632007 hp |
| 2 PS | 1.9726401 hp |
| 5 PS | 4.9316004 hp |
| 10 PS | 9.8632007 hp |
| 25 PS | 24.658002 hp |
| 50 PS | 49.316004 hp |
| 100 PS | 98.632007 hp |
| 150 PS | 147.94801 hp |
| 200 PS | 197.26401 hp |
| 500 PS | 493.16004 hp |
Every row is the same factor applied — nothing in the table is a special case, and any value in between behaves the same way. Type your own figure into the converter above and the Formula tile shows the arithmetic being used, so the result is checkable rather than taken on trust.
3. What the two units are
- Metric horsepower (PS) (PS). One PS is 735.49875 W.
- Horsepower (mechanical) (hp). One hp is 745.69987 W.
Both are converted through the watt (W): the value is multiplied by its own unit's factor to reach the base, then divided by the target unit's factor to leave it. No direct PS to hp factor has to exist or be kept correct, which is also why the converter can show the same value in all 7 power units at once.
Horsepower comes in flavours. Mechanical horsepower is 745.7 W, defined as 550 foot-pounds per second; metric horsepower — PS, the figure in European vehicle specifications — is 735.49875 W, about 1.4% smaller. Both are listed and labelled, because a car quoted at 150 PS is 148 hp, not 150.
If the pair you actually want is not this one, the full unit converter runs every 7 power units off the same factor table, along with 11 other categories of measurement.
4. Metric horsepower to Horsepower FAQs
How do I convert PS to hp?
Multiply by 0.98632007062. 1 PS = 0.98632007 hp, and 100 PS = 98.632007 hp. The factor is exact to the precision shown, so the only rounding is the one you choose to do at the end.
How many hp is 1 PS?
1 PS = 0.98632007 hp. The full formula is hp = PS × 0.98632007062, and 1 hp = 1.0138697 PS going the other way.
What is 100 PS in hp?
100 PS = 98.632007 hp. The table above works the same factor through 10 values, and the converter takes any figure you type — including decimals.
How do I convert hp to PS?
PS = hp × 1.01386966542, so 1 hp = 1.0138697 PS. Use the Swap button in the converter to reverse the direction without retyping the value.
Which horsepower does this use?
Both are available and labelled. Mechanical horsepower is 745.7 W, defined as 550 foot-pounds per second; metric horsepower (PS) is 735.49875 W, about 1.4% smaller and the figure quoted in European vehicle specifications.
Is anything I type sent to a server?
No. The factor table ships with the page and every conversion runs in your browser. Nothing is uploaded, logged or written to storage, and the converter keeps working offline once the page has loaded.