What does Btu (IT)/hour/square foot measure?

It measures the rate of heat transfer per unit area using the International Table British thermal unit per hour across one square foot.

Why convert to foot pound/minute/square foot?

This unit is used in legacy U.S. engineering and HVAC contexts to represent heat flux using imperial energy and time units.

Can I use this conversion for modern SI-based energy codes?

The units are legacy; conversions require care and may need further adjustment to comply with SI-based standards.

How to Convert Btu (IT)/hour/square foot to Foot pound/minute/square foot

Convert heat flux density values from British thermal units per hour per square foot to foot-pounds per minute per square foot easily. This tool helps interpret thermal transmittance data across different imperial unit conventions.

Btu (IT)/hour/square foot

Foot pound/minute/square foot

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

Btu (IT)/hour/square foot to Foot pound/minute/square foot Conversion Table

Btu (IT)/hour/square foot	Foot pound/minute/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)/hour/square foot to Foot pound/minute/square foot Conversion Table
Btu (IT)/hour/square foot	Foot pound/minute/square foot

Explore More Heat Flux Density Units Converter

What Is This Tool?

This converter facilitates the translation of heat flux density measurements between two imperial unit formats: Btu (IT)/hour/square foot and foot pound/minute/square foot. It is useful for interpreting energy transfer rates across surfaces commonly used in building physics and HVAC engineering.

How to Use This Tool?

Enter the heat flux density value in Btu (IT)/hour/square foot.
Select the target unit: foot pound/minute/square foot.
Submit the input to get the converted measurement instantly.
Use the result to analyze or compare thermal transmittance or heat transfer rates.

Key Features

Converts heat flux density between Btu (IT)/hour/square foot and foot pound/minute/square foot.
Based on a precise conversion rate reflecting energy and time unit differences.
Supports interpretation of thermal transmittance for building and HVAC applications.
Ideal for users working with legacy imperial heat transfer data.

Examples

2 Btu (IT)/hour/square foot equals approximately 25.94 foot pound/minute/square foot.
0.5 Btu (IT)/hour/square foot converts to about 6.48 foot pound/minute/square foot.

Common Use Cases

Converting U-values used in building energy codes and specifications.
Sizing heating and cooling loads by translating heat flux measurements.
Comparing insulation and assembly performance via thermal transmittance.
Reporting heat flux in legacy U.S. engineering or HVAC documents using imperial units.
Converting thermal-flux measurements between imperial and SI units in laboratories.

Tips & Best Practices

Double-check input values to ensure accurate conversion results.
Consider the fractional relationship between hours and minutes during calculations.
Use this tool primarily for interpreting legacy imperial-based data.
Cross-verify results when integrating with SI-based energy codes or modern standards.

Limitations

Conversion involves fractional time and energy unit differences requiring precision.
Units are generally legacy and may not directly align with modern SI-based systems.
Improper use can lead to errors in heat flux density estimation.
Not intended to replace SI unit conversions without proper adjustments.

Frequently Asked Questions

What does Btu (IT)/hour/square foot measure?: It measures the rate of heat transfer per unit area using the International Table British thermal unit per hour across one square foot.
Why convert to foot pound/minute/square foot?: This unit is used in legacy U.S. engineering and HVAC contexts to represent heat flux using imperial energy and time units.
Can I use this conversion for modern SI-based energy codes?: The units are legacy; conversions require care and may need further adjustment to comply with SI-based standards.

Key Terminology

Btu (IT)/hour/square foot: A heat flux density unit measuring energy transfer rate as one International Table British thermal unit per hour per square foot.
Foot pound/minute/square foot: A heat flux density unit describing energy transfer rate as one foot-pound per minute across one square foot of surface.
Heat flux density: The rate of heat energy transfer per unit surface area.
Thermal transmittance (U-value): A measure of heat transfer through a building envelope per unit area and temperature difference.

Quick Knowledge Check

What does the unit Btu (IT)/hour/square foot represent?

Energy transferred per minute per square foot

Heat flux density as British thermal units per hour per area

Power measured in watts per square meter

Why is foot pound/minute/square foot used in some reports?

It is the standard SI unit for heat flux

It appears in older U.S. engineering and HVAC documentation

It is a metric unit preferred in laboratories

What should you be cautious about when converting these units?

Ignoring differences between electrical and thermal units

Precision due to fractional time and energy unit conversions

Using the formula only for metric units

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