What Is This Tool?
This converter transforms heat flux density readings measured in foot pound per minute per square foot—a unit expressing energy transfer rate over an area in imperial units—into Btu (IT) per hour per square foot, a standard heat flux measure used in building energy codes and thermal analysis.
How to Use This Tool?
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Enter the value measured in foot pound per minute per square foot into the input field.
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Confirm the conversion target is set to Btu (IT) per hour per square foot.
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Click the convert button to obtain the equivalent heat flux density in Btu (IT)/hour/ft².
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Review the result to assist in thermal performance assessments or HVAC design.
Key Features
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Converts between imperial heat flux density units widely used in HVAC and building physics.
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Supports legacy energy transfer measurements to match current thermal transmittance standards.
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Facilitates heating and cooling load calculations by translating older unit measurements into recognized thermal units.
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Browser-based and easy to use with direct input and output values.
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Provides a clear conversion rate and example calculations for reference.
Examples
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Convert 10 foot pound/minute/square foot: Multiply 10 by 0.0771040478 to get approximately 0.771 Btu (IT)/hour/square foot.
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Convert 50 foot pound/minute/square foot: Multiply 50 by 0.0771040478 to get approximately 3.855 Btu (IT)/hour/square foot.
Common Use Cases
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Describing heat loss or gain through buildings in imperial unit documentation.
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Sizing heating and cooling loads for buildings using standardized thermal metrics.
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Comparing insulation and materials’ thermal properties with U‑values and R‑values.
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Translating legacy thermal-flux data for compliance with modern energy codes.
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Conducting research and testing in HVAC engineering and building physics.
Tips & Best Practices
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Ensure units are consistent when integrating converted values with other measurements, especially SI units.
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Verify initial foot pound/minute/square foot readings are precise to avoid propagation of errors.
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Use this conversion to align legacy data with current energy code requirements.
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Double-check time unit differences when performing manual calculations.
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Refer to provided examples to validate conversions.
Limitations
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Conversion applies only to related imperial units involving heat flux density per unit area.
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Watch for discrepancies due to different time units (minutes vs hours) in original and target units.
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Dependence on initial measurement accuracy can affect conversion reliability.
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May require careful unit consistency checks when combined with SI or metric data.
Frequently Asked Questions
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Why convert foot pound/minute/square foot to Btu (IT)/hour/square foot?
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Converting these units allows legacy imperial heat flux measurements to align with standardized thermal transmittance units used in building codes and energy modeling.
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What does one foot pound/minute/square foot represent?
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It denotes a rate of energy transfer where one foot-pound of energy is transferred each minute across a square foot area, expressing heat flux density in imperial units.
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Can this converter be used with SI units?
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This converter specifically handles imperial units, so when working with SI measurements, unit consistency and additional conversions may be necessary.
Key Terminology
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Foot pound/minute/square foot
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An imperial heat flux density unit representing energy transfer rate of one foot-pound per minute across a one square foot area.
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Btu (IT)/hour/square foot
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A heat flux density measure showing one British thermal unit transferred per hour over one square foot of surface.
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Heat flux density
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The rate of heat energy transfer per unit area, typically used to assess thermal performance.