Why are there different BTU units like thermochemical and International Table?

The thermochemical and International Table BTU units are based on slightly different definitions of heat energy, which leads to their use in different contexts and can affect conversion results.

Can I use this tool for converting to units other than Btu (IT)/second?

This converter specifically handles conversions from Btu (th)/hour to Btu (IT)/second, focusing on power units involving British thermal units.

When should I prefer expressing power in Btu (IT)/second instead of Btu (th)/hour?

Use Btu (IT)/second to express heat transfer rates with finer time resolution and for engineering calculations requiring measurements per second.

How to Convert from Btu (th)/hour [Btu (th)/h] to Btu (IT)/second [Btu/s]?

Convert power measurements from thermochemical British thermal units per hour to International Table British thermal units per second using this unit converter.

Btu (th)/hour [Btu (th)/h]

Btu (IT)/second [Btu/s]

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

Btu (th)/hour [Btu (th)/h] to Btu (IT)/second [Btu/s] Conversion Table

Btu (th)/hour [Btu (th)/h]	Btu (IT)/second [Btu/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.

Btu (th)/hour [Btu (th)/h] to Btu (IT)/second [Btu/s] Conversion Table
Btu (th)/hour [Btu (th)/h]	Btu (IT)/second [Btu/s]

Explore More Power Units Converter

What Is This Tool?

This converter transforms power values expressed in Btu (th)/hour, which measure the rate of heat transfer per hour using thermochemical British thermal units, into Btu (IT)/second, a unit measuring heat transfer rate per second based on International Table British thermal units.

How to Use This Tool?

Enter the value in Btu (th)/hour you wish to convert
Select Btu (th)/hour as the input unit
Choose Btu (IT)/second as the output unit
Click convert to obtain the equivalent power in Btu (IT)/second
Review examples provided for guidance if needed

Key Features

Converts power units from Btu (th)/hour to Btu (IT)/second accurately based on standardized definitions
Supports use cases in HVAC, industrial heating, and energy transfer calculations
Provides examples to illustrate typical conversions
Includes clear conversion rate and formula for easy reference
Browser-based and user-friendly interface

Examples

100 Btu (th)/hour converts to 0.02775919 Btu (IT)/second
500 Btu (th)/hour converts to 0.13879595 Btu (IT)/second

Common Use Cases

Sizing and rating HVAC equipment such as furnaces and air conditioners
Specifying heat output for boilers, water heaters, and heat exchangers
Estimating heating or cooling loads for buildings and refrigeration capacity
Performing heat-transfer and energy-balance calculations in engineering
Standardizing power measurements for BTU-based product literature

Tips & Best Practices

Confirm which BTU standard (thermochemical or International Table) is used in your source data
Use the conversion formula strictly to maintain consistency
Double-check heat output specifications when designing HVAC or industrial heating systems
Apply this conversion when higher time resolution in power measurement is required
Review example conversions to validate your inputs and outputs

Limitations

Different BTU definitions (thermochemical vs. International Table) can cause minor discrepancies
Ensure unit standards match the application context to avoid errors
Conversion does not address differences beyond time units like physical conditions affecting BTU definitions

Frequently Asked Questions

Why are there different BTU units like thermochemical and International Table?: The thermochemical and International Table BTU units are based on slightly different definitions of heat energy, which leads to their use in different contexts and can affect conversion results.
Can I use this tool for converting to units other than Btu (IT)/second?: This converter specifically handles conversions from Btu (th)/hour to Btu (IT)/second, focusing on power units involving British thermal units.
When should I prefer expressing power in Btu (IT)/second instead of Btu (th)/hour?: Use Btu (IT)/second to express heat transfer rates with finer time resolution and for engineering calculations requiring measurements per second.

Key Terminology

Btu (th)/hour: A power unit representing heat transfer rate using thermochemical British thermal units per hour.
Btu (IT)/second: A power unit expressing heat transfer per second based on the International Table British thermal unit.
British thermal unit (BTU): A unit of heat energy with different variants such as thermochemical and International Table used in various engineering contexts.

Quick Knowledge Check

What does 1 Btu (th)/hour measure?

One International Table British thermal unit per second

One thermochemical British thermal unit transferred per hour

One watt of power over an hour

Why might small discrepancies occur when converting between Btu (th)/hour and Btu (IT)/second?

Because of rounding errors in calculation

Due to different definitions of the British thermal unit

Because time units are different

In which fields is this unit conversion particularly useful?

HVAC system design and heat transfer engineering

Electrical circuit design

Chemical reaction balancing

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