What Is This Tool?
This tool converts power measurements from the mechanical horsepower unit defined as 550 foot‑pound‑force per second to the metric horsepower unit. It helps users translate power ratings between imperial and metric standards commonly used in engines, motors, and industrial equipment.
How to Use This Tool?
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Enter the power value in horsepower (550 ft*lbf/s)
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Select horsepower (metric) as the target unit
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Click convert to see the equivalent value
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Use the results for comparing power ratings across different measurement systems
Key Features
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Converts between mechanical horsepower (550 ft*lbf/s) and metric horsepower
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Supports power ratings in automotive, industrial, and small engine applications
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Instant conversion using a fixed, precise conversion rate
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Browser-based and easy to use for technical and general purposes
Examples
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5 horsepower (550 ft*lbf/s) converts to approximately 5.069 horsepower (metric)
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10 horsepower (550 ft*lbf/s) converts to about 10.139 horsepower (metric)
Common Use Cases
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Comparing engine power ratings of cars and motorcycles in various markets
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Specifying power for small engines and garden tools
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Interpreting technical datasheets for pumps, compressors, and industrial motors
Tips & Best Practices
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Always confirm regional unit preferences when stating power specs
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Use the conversion for clear communication between imperial and metric systems
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Double-check conversions in critical technical documentation for accuracy
Limitations
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Units have close but not identical definitions requiring precise conversion
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Regional and industry standards may favor one horsepower variant over the other
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Conversion does not consider differences in test conditions or engine speeds
Frequently Asked Questions
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What is horsepower (550 ft*lbf/s)?
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It is an imperial unit of power equal to 550 foot‑pound‑force per second, defined as mechanical horsepower by James Watt.
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How does metric horsepower differ?
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Metric horsepower is defined as exactly 735.49875 watts, slightly different from mechanical horsepower, and commonly used in many European and Asian countries.
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Why convert between these horsepower types?
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Conversion allows comparing and communicating power ratings across regions and standards, especially for engines and motors specified in different unit systems.
Key Terminology
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horsepower (550 ft*lbf/s)
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An imperial unit of power equal to 550 foot‑pound‑force per second, used for rating engines and motors primarily in imperial unit contexts.
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horsepower (metric)
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A metric unit of power defined as exactly 735.49875 watts, commonly utilized in automotive and industrial applications outside imperial measurement regions.
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conversion rate
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A fixed multiplier representing how many metric horsepower units equal one horsepower (550 ft*lbf/s).