What Is This Tool?
This converter transforms thermal conductivity measurements from calorie (IT)/second/cm/°C, a metric legacy unit, into Btu (th) inch/second/sq. foot/°F, an Imperial unit used primarily in US HVAC and building contexts. It helps translate heat transfer properties between different unit systems for accurate reporting and analysis.
How to Use This Tool?
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Enter the thermal conductivity value in calorie (IT)/second/cm/°C
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Select the target unit as Btu (th) inch/second/sq. foot/°F
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Click the convert button to get the equivalent value
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Use the result for building insulation analysis, HVAC design, or material property conversion
Key Features
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Converts thermal conductivity units between metric and Imperial systems
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Supports calorie (IT)/second/cm/°C and Btu (th) inch/second/sq. foot/°F units
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Facilitates heat transfer data comparison and engineering calculations
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Browser-based and easy to use without additional software
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Useful for translating historical and legacy thermal data
Examples
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5 calorie (IT)/s/cm/°C converts to approximately 4.034512 Btu (th) inch/sq. ft./s/°F
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0.1 calorie (IT)/s/cm/°C converts to approximately 0.080690 Btu (th) inch/sq. ft./s/°F
Common Use Cases
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Comparing thermal conductivities of metals and alloys in legacy literature
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Analyzing insulating materials using non-SI thermal data
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Performing conduction heat transfer calculations in Imperial units for US-based projects
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Converting historical heat transfer measurements to modern engineering units
Tips & Best Practices
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Check the units carefully before conversion to avoid confusion between metric and Imperial systems
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Use this tool when working with older data sources or documents referencing calorie (IT) units
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Apply converted values in engineering analyses for precise thermal conductivity comparisons
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Be mindful of differences in base measurements such as cm versus inch and °C versus °F
Limitations
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Conversion involves different base units (cm vs. inch, °C vs. °F) requiring careful handling
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Thermochemical unit equivalencies approximate results and may introduce minor inaccuracies
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The calorie (IT) unit is less common today, limiting usage mostly to legacy datasets
Frequently Asked Questions
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What does calorie (IT)/second/cm/°C measure?
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It measures thermal conductivity as heat transfer per second through a 1 cm thick material area with a 1 °C temperature difference, based on International Table calories.
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When should I convert thermal conductivity to Btu (th) inch/second/sq. foot/°F?
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Convert when working with US customary units in HVAC, building insulation analysis, or engineering documents using Imperial units.
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Are these units interchangeable without conversion?
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No, because they involve different measurement bases and heat units, conversion is necessary for accurate comparison.
Key Terminology
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Calorie (IT)/second/cm/°C
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A metric unit of thermal conductivity based on International Table calories defined as heat transferred per second through 1 cm thickness with a 1 °C temperature difference.
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Btu (th) inch/second/sq. foot/°F
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An Imperial thermal conductivity unit representing heat transferred per second through 1 inch thickness and 1 square foot area with a 1 °F temperature difference.
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Thermal conductivity
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A material property that indicates the ability to conduct heat.