What is horsepower (water)?

Horsepower (water), also called hydraulic horsepower, represents the theoretical mechanical power to move water at a certain flow and head and is calculated based on volume flow, head height, and fluid properties.

Why convert horsepower (water) to mechanical horsepower?

Converting to mechanical horsepower facilitates comparison with engine and motor power ratings that commonly use the mechanical/imperial horsepower unit.

Are all horsepower units the same?

No, horsepower has several variants like mechanical (imperial), metric, and electrical, each with different exact power equivalents.

How to Convert from Horsepower (water) to Horsepower [hp, hp (UK)]

Learn how to convert power values from horsepower (water) to the conventional mechanical horsepower units (hp, hp (UK)) using a reliable online unit converter designed for accurate power measurement translation.

Horsepower (water)

Horsepower [hp, hp (UK)]

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Horsepower (water) to Horsepower [hp, hp (UK)] Conversion Table

Horsepower (water)	Horsepower [hp, hp (UK)]

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 [hp, hp (UK)] Conversion Table
Horsepower (water)	Horsepower [hp, hp (UK)]

Explore More Power Units Converter

What Is This Tool?

This tool converts power measurements from horsepower (water), a unit representing hydraulic power related to moving water, into mechanical horsepower units commonly used for engines and motors. It helps bridge the gap between hydraulic power values and mechanical power ratings.

How to Use This Tool?

Enter the value in horsepower (water) you wish to convert
Select horsepower (water) as the source unit and horsepower [hp, hp (UK)] as the target unit
Click the convert button to see the corresponding value in mechanical horsepower
Review the conversion results to assist with engineering or power rating tasks

Key Features

Converts horsepower (water) to mechanical horsepower [hp, hp (UK)] accurately
Uses a precise conversion rate specific to the mechanical/imperial horsepower variant
Suitable for applications in pump sizing, engine rating, and micro-hydropower evaluation
Easy to use with a browser-based interface and straightforward input fields
Provides example conversions for quick reference

Examples

5 horsepower (water) converts to approximately 5.0023 horsepower [hp, hp (UK)]
10 horsepower (water) converts to approximately 10.0046 horsepower [hp, hp (UK)]

Common Use Cases

Sizing and selecting pumps in irrigation and municipal water supply systems
Estimating hydraulic power availability for micro-hydropower turbines
Determining motor power requirements in piping and pumping designs
Rating automotive and motorcycle engine output for specifications
Specifying power levels for electric motors, pumps, and small engines
Comparing marine engine and industrial machinery performance

Tips & Best Practices

Confirm you are using the mechanical/imperial horsepower variant when converting
Use the tool for quick performance comparisons and equipment specification checks
Understand the theoretical basis of water horsepower may differ from actual system conditions
Apply conversions carefully where precise power ratings impact design or purchasing decisions

Limitations

Different horsepower variants exist; this conversion applies only to mechanical/imperial horsepower [hp, hp (UK)]
The theoretical water horsepower calculation assumes ideal conditions and may not reflect real-world efficiency losses or friction
Conversions may not be directly applicable for metric or electrical horsepower without adjustment

Frequently Asked Questions

What is horsepower (water)?: Horsepower (water), also called hydraulic horsepower, represents the theoretical mechanical power to move water at a certain flow and head and is calculated based on volume flow, head height, and fluid properties.
Why convert horsepower (water) to mechanical horsepower?: Converting to mechanical horsepower facilitates comparison with engine and motor power ratings that commonly use the mechanical/imperial horsepower unit.
Are all horsepower units the same?: No, horsepower has several variants like mechanical (imperial), metric, and electrical, each with different exact power equivalents.

Key Terminology

Horsepower (water): A unit of power representing theoretical mechanical power to move water, calculated from flow rate, head, and fluid density.
Horsepower [hp, hp (UK)]: A mechanical/imperial unit of power equal to about 550 foot-pounds per second, commonly used for engines and motor performance ratings.
Conversion rate: The numerical factor used to translate a measurement from one unit to another; here, 1 horsepower (water) equals approximately 1.0004601428 mechanical horsepower.

Quick Knowledge Check

Which unit does this converter translate horsepower (water) into?

Metric horsepower

Mechanical horsepower [hp, hp (UK)]

Electrical horsepower

What is a common use of horsepower (water)?

Rating automotive engines

Sizing pumps for water systems

Measuring electrical output

What should be considered when using this conversion?

It only applies to electrical horsepower

It assumes ideal hydraulic conditions without losses

It converts metric horsepower to mechanical horsepower

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