PS to HP Converter. PS (Pferdestärke) is the metric horsepower unit used in Germany and much of Europe, and it differs slightly from the mechanical horsepower (HP) used in the US and UK — the PS to HP Converter bridges that gap. Enter a value in Pferdestärke (PS) or Horsepower (HP), then select your conversion direction to get the converted power output along with the conversion factor and formula used. Also try the kW to HP Converter (Automotive).
PS (Pferdestärke) is a metric horsepower unit used primarily in Europe, while HP refers to mechanical horsepower used in the US and UK. 1 PS equals approximately 0.9863 HP. See also our Volumetric Efficiency Calculator.
To convert PS to HP, multiply the PS value by 0.98632. For example, 100 PS = 100 × 0.98632 = 98.632 HP.
To convert HP to PS, multiply the HP value by 1.01387. For example, 100 HP = 100 × 1.01387 = 101.387 PS.
PS and HP are based on slightly different standards. PS is defined as 735.5 watts, while mechanical HP is defined as 745.7 watts, making HP about 1.4% larger than PS.
PS is commonly used in Germany, most European countries, and some Asian markets for measuring engine power, especially in automotive applications.
Yes, PS (Pferdestärke) and metric horsepower are the same unit. Both equal exactly 735.5 watts or about 0.9863 mechanical horsepower.
1 PS equals exactly 735.5 watts. This is the standard definition used in the metric system for measuring power output. You might also find our Wastegate Crack Pressure Calculator useful.