Convert mechanical horsepower to metric horsepower

1 hp=1.01387PS

Use the converter below to change any mechanical horsepower value into metric horsepower instantly — with formula, conversion table, and real-world examples.

You have

Equals

1.01387

Conversion formula

Forward

metric horsepower = mechanical horsepower × 1.01387

Reverse

mechanical horsepower = metric horsepower × 0.9863

Example: 10 hp × 1.01387 = 10.1387 PS.

About both units

From

Mechanical Horsepower

Mechanical horsepower equals 745.7 watts — James Watt's 1782 definition based on horse labor. Used in US car engines, aircraft and some industrial equipment. US muscle cars quote hp; European cars usually kW or PS.

Real-world: Base Ford Mustang: ~310 hp. Lawn mower: 5 hp. Average car: 150–200 hp.

Read full mechanical horsepower reference →

Metric Horsepower

Metric horsepower (PS in German, ch in French) equals 735.5 watts. It is the standard power unit in European car marketing — a "200 PS" car has 147 kW. Slightly smaller than mechanical horsepower (1.4%).

Real-world: VW Golf GTI: ~245 PS = 180 kW. BMW M3: ~480 PS = 353 kW.

Read full metric horsepower reference →

Mechanical Horsepower to Metric Horsepower conversion table

Common mechanical horsepower to metric horsepower values for quick reference.

Mechanical Horsepower (hp)	Metric Horsepower (PS)
1 hp	1.01387 PS
5 hp	5.06935 PS
10 hp	10.1387 PS
50 hp	50.6935 PS
100 hp	101.387 PS
500 hp	506.935 PS
1,000 hp	1,013.87 PS
5,000 hp	5,069.35 PS
10,000 hp	10,138.7 PS
50,000 hp	50,693.48 PS

Tips & common mistakes

Quick tips

1 hp = 745.7 W = 0.7457 kW.
US car ads quote hp; European ads quote kW or PS.
Metric horsepower (PS) differs by ~1.4% — be aware.

Avoid these

Assuming hp and PS are identical — 1.4% difference.
Using horsepower for electrical devices — watts more appropriate.
Confusing horsepower at engine flywheel vs wheel (transmission losses).

Frequently asked questions

How many metric horsepower in a mechanical horsepower?

One mechanical horsepower equals 1.01387 metric horsepower.

How do I convert mechanical horsepower to metric horsepower?

Multiply the mechanical horsepower value by 1.01387 to get the equivalent in metric horsepower.

What is 100 mechanical horsepower in metric horsepower?

100 mechanical horsepower equals 101.387 metric horsepower.

Is a mechanical horsepower bigger than a metric horsepower?

Yes. 1 mechanical horsepower equals 1.01387 metric horsepower, so one mechanical horsepower is larger.

How to convert mechanical horsepower to metric horsepower without a calculator?

Multiply by 1.01 for a quick estimate; use a calculator for precise results.

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