What does 1 Btu (IT)/second/square foot represent?

It represents thermal power of one British thermal unit (International Table) transferred every second across an area of one square foot.

Why convert to Btu (th)/hour/square foot?

Because Btu (th)/hour/square foot is commonly used in building science and HVAC for expressing heat transfer rates on an hourly basis and per unit area.

Can I use this conversion for all heat flux measurements?

This conversion works best when heat flux is consistent over time and may not capture transient or highly variable heat transfer.

How to Convert from Btu (IT)/second/square foot to Btu (th)/hour/square foot?

Learn to convert heat flux density measurements from Btu (IT) per second per square foot to Btu (th) per hour per square foot with this practical unit converter tool designed for professionals in fire testing, building science, and HVAC.

Btu (IT)/second/square foot

Btu (th)/hour/square foot

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

Btu (IT)/second/square foot to Btu (th)/hour/square foot Conversion Table

Btu (IT)/second/square foot	Btu (th)/hour/square foot

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 (IT)/second/square foot to Btu (th)/hour/square foot Conversion Table
Btu (IT)/second/square foot	Btu (th)/hour/square foot

Explore More Heat Flux Density Units Converter

What Is This Tool?

This converter transforms heat flux density values from Btu (IT)/second/square foot to Btu (th)/hour/square foot, assisting users in adapting high-intensity heat measurements used in thermal testing into units common in building science and HVAC for effective thermal analysis.

How to Use This Tool?

Enter the value in Btu (IT)/second/square foot you want to convert
Select the conversion to Btu (th)/hour/square foot
Click the convert button to get the result instantly
Use the output to support design, testing, or compliance needs

Key Features

Converts non-SI heat flux density units across different time scales
Supports fire testing and materials science applications
Aligns measurements with building science and HVAC conventions
Provides accurate translation between Btu (IT) and Btu (th) units
Browser-based and easy to use without additional software

Examples

1 Btu (IT)/second/square foot equals approximately 3602.41 Btu (th)/hour/square foot
0.5 Btu (IT)/second/square foot equals roughly 1801.20 Btu (th)/hour/square foot

Common Use Cases

Reporting extreme heat fluxes in fire-resistance testing
Specifying localized heat loads in furnace and plasma experiments
Evaluating thermal protection in materials testing
Calculating insulation heat loss or gain in building envelopes
Sizing HVAC loads based on heat transfer through walls and windows

Tips & Best Practices

Understand the difference between International Table and thermochemical Btu when interpreting results
Ensure consistent units and timescales when comparing heat flux measurements
Use this tool to aid thermal performance evaluations in fire safety and building science
Apply conversions thoughtfully for both short-duration and steady-state heat flux scenarios

Limitations

Small discrepancies may exist due to the difference in Btu definitions
Assumes uniform heat flux over time, which may not suit transient conditions
Different timescales (seconds vs. hours) require careful comparison across applications

Frequently Asked Questions

What does 1 Btu (IT)/second/square foot represent?: It represents thermal power of one British thermal unit (International Table) transferred every second across an area of one square foot.
Why convert to Btu (th)/hour/square foot?: Because Btu (th)/hour/square foot is commonly used in building science and HVAC for expressing heat transfer rates on an hourly basis and per unit area.
Can I use this conversion for all heat flux measurements?: This conversion works best when heat flux is consistent over time and may not capture transient or highly variable heat transfer.

Key Terminology

Btu (IT)/second/square foot: A heat flux density unit representing one British thermal unit (International Table) transferred per second across one square foot of surface.
Btu (th)/hour/square foot: A heat flux density measure indicating one thermochemical British thermal unit transferred per hour through one square foot.
Heat Flux Density: The rate of thermal energy transfer per unit area, commonly used for evaluating thermal performance and safety.

Quick Knowledge Check

Which unit measures heat flux density with energy per second per square foot?

Btu (th)/hour/square foot

Btu (IT)/second/square foot

W/m²

What is a common use of Btu (th)/hour/square foot?

Fire testing with high-intensity fluxes

Sizing HVAC loads through building envelopes

Plasma heating experiments

What should users be cautious about when converting between these units?

Differences in Btu definitions and time scales

Electrical energy units mixing with thermal units

Incompatibility with SI units

Share Us

Similar Calculators

Online Temperature Units Converter Online Data Storage Units Converter Online Charge Units Converter Online Permeability Units Converter Online Linear Current Density Units Converter