Horsepower Converter
Convert Horsepower to Pferdestarke Ps and more • 80 conversions
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Unit Explanations
Horsepowerhp
Source UnitHorsepower is a unit of measurement for power, which quantifies the rate at which work is done. It is traditionally used to express the power output of engines or motors. One horsepower is defined as the power needed to lift 550 pounds one foot in one second, equivalent to 745.7 watts in the SI system. The term was originally formulated to compare the output of steam engines with the power of draft horses, which were a primary source of industrial power in the 18th century.
Current Use
Horsepower remains a common unit of power measurement in the automotive industry, where it is used to specify the power output of engines. It is also used in various other industries, such as those involving pumps, turbines, and electric motors. Despite the widespread adoption of the watt as the SI unit of power, horsepower is still frequently used in non-SI contexts, particularly in the United States and the United Kingdom.
Fun Fact
James Watt's first estimate of horsepower was based on the power of a brewery horse.
Pferdestärkeps
Target UnitThe Pferdestärke (ps), which translates to 'horse strength' in English, is a non-SI unit of power that is predominantly used in German-speaking countries. It is defined as the power necessary to raise 75 kilograms at a speed of 1 meter per second. The unit is often used in measuring engine output and is historically linked to the power exerted by a horse. In precise terms, one Pferdestärke is equivalent to approximately 0.986 horsepower (hp) or 735.5 watts (W). This unit reflects the historical importance of horses in transportation and labor, especially in the 19th century when steam engines began to replace them.
Current Use
Today, the Pferdestärke is primarily used in the automotive industry, particularly in Germany, Austria, and Switzerland, where it indicates the power of internal combustion engines. While the use of SI units like watts is encouraged, many consumers still prefer the Pferdestärke due to its historical significance and familiarity. In many contexts, car manufacturers will list engine power in both Pferdestärke and kilowatts, allowing consumers to compare with other vehicles.
Fun Fact
The Pferdestärke was developed as a marketing tool to help sell steam engines by illustrating their power compared to horses.
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= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Horsepower
power • Non-SI
Definition
Horsepower is a unit of measurement for power, which quantifies the rate at which work is done. It is traditionally used to express the power output of engines or motors. One horsepower is defined as the power needed to lift 550 pounds one foot in one second, equivalent to 745.7 watts in the SI system. The term was originally formulated to compare the output of steam engines with the power of draft horses, which were a primary source of industrial power in the 18th century.
History & Origin
The concept of horsepower was introduced in the late 18th century by the Scottish engineer James Watt to help market his steam engines. Watt observed the performance of horses in coal mines and estimated that a horse could turn a mill wheel of a certain size at a certain speed. This observation led him to define one horsepower as the ability to lift 550 pounds one foot in one second. Watt's definition was widely adopted and became a standard measure of engine power.
Etymology: The term 'horsepower' combines 'horse' with 'power', reflecting its origin as a measure of mechanical power compared to the power of a horse.
Current Use
Horsepower remains a common unit of power measurement in the automotive industry, where it is used to specify the power output of engines. It is also used in various other industries, such as those involving pumps, turbines, and electric motors. Despite the widespread adoption of the watt as the SI unit of power, horsepower is still frequently used in non-SI contexts, particularly in the United States and the United Kingdom.
💡 Fun Facts
- •James Watt's first estimate of horsepower was based on the power of a brewery horse.
- •The term 'horsepower' helped sell steam engines, as people could relate to the power of horses.
- •Despite the metric system's dominance, horsepower is still widely used in the automotive industry.
📏 Real-World Examples
🔗 Related Units
Pferdestärke
power • Non-SI
Definition
The Pferdestärke (ps), which translates to 'horse strength' in English, is a non-SI unit of power that is predominantly used in German-speaking countries. It is defined as the power necessary to raise 75 kilograms at a speed of 1 meter per second. The unit is often used in measuring engine output and is historically linked to the power exerted by a horse. In precise terms, one Pferdestärke is equivalent to approximately 0.986 horsepower (hp) or 735.5 watts (W). This unit reflects the historical importance of horses in transportation and labor, especially in the 19th century when steam engines began to replace them.
History & Origin
The term 'Pferdestärke' was first coined by the engineer James Watt in the late 18th century to quantify the output of steam engines relative to the strength of horses. Watt conducted experiments to determine the work capacity of horses, establishing a benchmark for power measurement that could be understood by the public. His comparative analysis led to the adoption of the Pferdestärke as a standard unit in various engineering disciplines, particularly in Germany and Austria.
Etymology: The word 'Pferdestärke' literally translates to 'horse strength' in German, combining 'Pferd' (horse) and 'Stärke' (strength or power). This nomenclature underscores the historical reliance on horses as a primary source of mechanical power before the advent of modern engines.
Current Use
Today, the Pferdestärke is primarily used in the automotive industry, particularly in Germany, Austria, and Switzerland, where it indicates the power of internal combustion engines. While the use of SI units like watts is encouraged, many consumers still prefer the Pferdestärke due to its historical significance and familiarity. In many contexts, car manufacturers will list engine power in both Pferdestärke and kilowatts, allowing consumers to compare with other vehicles.
💡 Fun Facts
- •The Pferdestärke was developed as a marketing tool to help sell steam engines by illustrating their power compared to horses.
- •In some countries, the Pferdestärke is still preferred in automotive discussions, despite the global standardization towards SI units.
- •The term 'horsepower' was also inspired by the same experiments conducted by James Watt, leading to different definitions across regions.
📏 Real-World Examples
🔗 Related Units
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