What is the difference between horsepower and Btu (th)/second?

Horsepower is a unit of mechanical power, whereas Btu (th)/second measures the rate of thermal energy transfer.

Why do I need to convert horsepower to Btu (th)/second?

This conversion is useful when translating mechanical power into thermal power, especially in heating, cooling, and energy system applications.

Are all horsepower units the same for this conversion?

No, different variants like metric horsepower vary slightly and can affect the conversion factor.

How to Convert from Horsepower [hp, hp (UK)] to Btu (th)/second [Btu (th)/s]

Learn how to convert mechanical power measured in horsepower (hp, hp UK) to thermal power units expressed in Btu (th)/second with this easy-to-use online converter. Perfect for automotive, HVAC, and energy system applications.

Horsepower [hp, hp (UK)]

Btu (th)/second [Btu (th)/s]

Please check your input. It must be a valid numeric value.

Horsepower [hp, hp (UK)] to Btu (th)/second [Btu (th)/s] Conversion Table

Horsepower [hp, hp (UK)]	Btu (th)/second [Btu (th)/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 [hp, hp (UK)] to Btu (th)/second [Btu (th)/s] Conversion Table
Horsepower [hp, hp (UK)]	Btu (th)/second [Btu (th)/s]

Explore More Power Units Converter

What Is This Tool?

This converter transforms power values from horsepower (hp, hp UK), a traditional mechanical power unit, into Btu (th)/second, a unit measuring thermal energy flow. It supports users in fields requiring conversion between mechanical and heat transfer power.

How to Use This Tool?

Enter the power value measured in horsepower (hp, hp UK)
Select horsepower as the input unit and Btu (th)/second as the output unit
Click the convert button to get the equivalent thermal power in Btu (th)/second
Use the result to support calculations in heating, cooling, or mechanical-to-thermal power comparisons

Key Features

Converts horsepower (hp, hp UK) to thermochemical British thermal units per second (Btu (th)/s)
Ideal for automotive, HVAC, and industrial power calculations
Browser-based tool with quick and straightforward usage
Supports conversion relevant to heating, cooling, and energy system design

Examples

Convert 5 horsepower: 5 × 0.7072602756 = 3.536301378 Btu (th)/second
Convert 0.2 horsepower: 0.2 × 0.7072602756 = 0.141452055 Btu (th)/second

Common Use Cases

Assessing engine power output in automotive and motorcycle specifications
Rating HVAC equipment such as furnaces and air conditioners by their heat delivery capacity
Specifying boiler and heat exchanger performance in building and industrial energy systems
Comparing power ratings for marine engines, generators, and industrial machinery

Tips & Best Practices

Confirm that the horsepower variant used is the mechanical/imperial type (hp UK) for accurate conversion
Use the conversion to relate mechanical power outputs to heat transfer requirements
Be mindful that Btu (th)/second refers to thermochemical Btu, not other Btu variants
Apply the conversion primarily for steady-state power scenarios, avoiding transient or efficiency loss considerations

Limitations

Different horsepower variants like metric horsepower have slightly different wattage affecting conversion accuracy
Btu (th)/second measures thermochemical British thermal units, so results may differ from other heat units like IT Btu
Conversion is based on steady-state assumptions and does not account for transient power changes or system losses

Frequently Asked Questions

What is the difference between horsepower and Btu (th)/second?: Horsepower is a unit of mechanical power, whereas Btu (th)/second measures the rate of thermal energy transfer.
Why do I need to convert horsepower to Btu (th)/second?: This conversion is useful when translating mechanical power into thermal power, especially in heating, cooling, and energy system applications.
Are all horsepower units the same for this conversion?: No, different variants like metric horsepower vary slightly and can affect the conversion factor.

Key Terminology

Horsepower (hp, hp UK): A non-SI unit of mechanical power, traditionally defined as 550 foot-pounds per second, commonly approximated as 745.7 watts.
Btu (th)/second: A unit measuring thermal power based on the rate of thermochemical British thermal units delivered every second.
Thermochemical Btu: A specific definition of the British thermal unit used for heat energy calculations in thermochemical contexts, differing slightly from other Btu types.

Quick Knowledge Check

What does horsepower measure?

Thermal energy transfer rate

Mechanical power output

Heat flow rate

Which unit expresses heat transfer rate in this conversion?

Btu (th)/second

Horsepower

Kilowatts

What should users be cautious about when converting horsepower to Btu (th)/second?

Transient power changes not accounted for

Variations in horsepower definitions

Measurement temperature

Share Us

Similar Calculators

Online Heat Flux Density Units Converter Online Weight and Mass Units Converter Online Fuel Consumption Units Converter Online Moment of Inertia Units Converter Online Length Units Converter