What does horsepower (water) measure?

Horsepower (water) quantifies the theoretical mechanical power necessary to move a volume of water against a given head.

Why convert horsepower (water) to horsepower (550 ft*lbf/s)?

Converting to mechanical horsepower helps compare hydraulic power to engine ratings and size equipment using imperial units.

Are horsepower (water) and horsepower (550 ft*lbf/s) equal?

They are close in value, but horsepower (water) is slightly larger by a small conversion factor.

How to Convert from Horsepower (water) to Horsepower (550 ft*lbf/s)?

Learn how to convert power values from horsepower (water), a unit used in hydraulic calculations, to horsepower (550 ft*lbf/s), the mechanical horsepower unit commonly used for engines and equipment ratings.

Horsepower (water)

Horsepower (550 ft*lbf/s)

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Horsepower (water) to Horsepower (550 ft*lbf/s) Conversion Table

Horsepower (water)	Horsepower (550 ft*lbf/s)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Horsepower (water) to Horsepower (550 ft*lbf/s) Conversion Table
Horsepower (water)	Horsepower (550 ft*lbf/s)

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What Is This Tool?

This unit converter helps translate power measurements from horsepower (water), which represents hydraulic power in fluid systems, into horsepower (550 ft*lbf/s), a mechanical power unit widely employed in automotive and machinery power ratings.

How to Use This Tool?

Enter the power value in horsepower (water).
Select horsepower (550 ft*lbf/s) as the target unit.
Click convert to get the equivalent mechanical horsepower value.

Key Features

Converts water horsepower to mechanical horsepower (550 ft*lbf/s) accurately using empirical conversion.
Supports power unit translations common in engineering, automotive, and machinery fields.
Facilitates equipment power comparison and proper sizing in imperial unit systems.

Examples

5 horsepower (water) converts to approximately 5.0023 horsepower (550 ft*lbf/s).
10 horsepower (water) converts to approximately 10.0046 horsepower (550 ft*lbf/s).

Common Use Cases

Sizing and selecting pumps for irrigation and municipal water systems by comparing water and mechanical horsepower.
Estimating motor power requirements for piping and pumping designs.
Rating and specifying small engines, compressors, and equipment in imperial units.

Tips & Best Practices

Use this conversion when comparing hydraulic power with mechanical power outputs for equipment compatibility.
Apply the tool in fields related to fluid power systems, automotive engines, and portable machinery.
Be aware of slight variations due to specific gravity and measurement differences when using results for precise engineering.

Limitations

Conversion assumes standard conditions and empirical formulas, which may introduce minor discrepancies.
Small but meaningful differences exist between these horsepower definitions impacting precise power matching.
Specific gravity variations and measurement accuracy can affect results.

Frequently Asked Questions

What does horsepower (water) measure?: Horsepower (water) quantifies the theoretical mechanical power necessary to move a volume of water against a given head.
Why convert horsepower (water) to horsepower (550 ft*lbf/s)?: Converting to mechanical horsepower helps compare hydraulic power to engine ratings and size equipment using imperial units.
Are horsepower (water) and horsepower (550 ft*lbf/s) equal?: They are close in value, but horsepower (water) is slightly larger by a small conversion factor.

Key Terminology

Horsepower (water): A measure of hydraulic power representing the mechanical power required to move water against a certain head.
Horsepower (550 ft*lbf/s): An imperial mechanical power unit defined as 550 foot-pound-force per second, used for engines and equipment ratings.

Quick Knowledge Check

What unit does horsepower (water) primarily relate to?

Mechanical engine power

Hydraulic power in water systems

Electrical power output

What is horsepower (550 ft*lbf/s) commonly used to rate?

Internal combustion engines

Water flow rates

Electric circuit power

What is a limitation of converting between these horsepower units?

Exact equivalence with no variation

Possible minor discrepancies due to measurement and conditions

Conversion only applies to metric units

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