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Power and Energy

hptoPS

Convert mechanical horsepower (hp) to metric horsepower (PS).

Factor1 hp = 1.01387 PS

Converter

hp

Accepts numbers or expressions, e.g. 150 + 14.7

Result
101.387PS

Rendered to 6 significant figures.

Formula

Formula
PS = hp × 1.01387

Multiply any value in mechanical horsepower by 1.01387 to obtain the value in metric horsepower.

Worked example

Convert 100 hp to PS.

  1. 01Start with 100 hp.
  2. 02Multiply by the conversion factor: 100 × 1.01387 = 101.387 PS.
Result100 hp = 101.387 PS

Conversion table

hpPS
11.0139
22.0277
55.0693
1010.139
2020.277
5050.693
100101.39
200202.77
500506.93
10001013.9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from hp to PS?
1 hp equals 1.01387 PS. To convert, multiply the value in mechanical horsepower by 1.01387.
How do I convert 1 hp to PS?
1 hp = 1.01387 PS. For any value, multiply by 1.01387.
How do I convert PS back to hp?
Divide by the same factor — or equivalently, multiply by 0.9863201. So 1 PS = 0.98632 hp.
When would I need to convert mechanical horsepower to metric horsepower?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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