What Is This Tool?
This converter allows you to transform thermal conductivity measurements between kilocalorie (IT)/hour/meter/°C and Btu (th) inch/second/sq. foot/°F units. It helps users switch between non-SI and Imperial units commonly used in engineering, HVAC design, and building materials analysis.
How to Use This Tool?
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Enter the thermal conductivity value in kilocalorie (IT)/hour/meter/°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 view the result in the desired unit
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Use the conversion factor 1 kcal(IT)/h/m/°C = 0.0022413956 Btu(th)·in/(s·ft²·°F)
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Review the output for application in your HVAC or engineering calculations
Key Features
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Converts thermal conductivity values between kilocalorie (IT)/hour/meter/°C and Btu (th) inch/second/sq. foot/°F
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Supports legacy non-SI and US customary unit systems used in HVAC and construction
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Provides clear conversion based on standardized heat transfer units
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Browser-based and easy to use without software installation
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Facilitates consistent heat transfer calculations across regional standards
Examples
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5 kilocalorie (IT)/hour/meter/°C converts to 0.011206978 Btu (th) inch/second/sq. foot/°F
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10 kilocalorie (IT)/hour/meter/°C converts to 0.022413956 Btu (th) inch/second/sq. foot/°F
Common Use Cases
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Specifying thermal conductivity for building insulation and construction materials in HVAC design
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Comparing heat-transfer properties in engineering literature using kcal/h units
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Conduction heat-transfer calculations in older engineering or industry standards
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Converting material property data between Imperial and SI systems on datasheets
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Sizing heat exchangers and piping based on legacy design data
Tips & Best Practices
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Ensure steady-state heat transfer conditions match your application before conversion
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Carefully handle temperature, thickness, and area units to prevent calculation errors
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Use this converter when working across regional engineering standards
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Verify unit definitions when integrating legacy data to maintain consistency
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Apply converted values appropriately within HVAC and construction material analyses
Limitations
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Units assume steady-state heat flow and uniform geometry, not transient conditions
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Conversion depends on specific definitions of calorie and British thermal unit that may vary
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Temperature scale differences (°C vs. °F) require cautious use in complex calculations
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May not fully account for non-uniform or time-dependent heat transfer scenarios
Frequently Asked Questions
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What does kilocalorie (IT)/hour/meter/°C measure?
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It measures thermal conductivity representing the steady heat flow of one kilocalorie per hour through a 1-meter thick material with a 1 °C temperature difference.
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When should I use Btu (th) inch/second/sq. foot/°F units?
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Use these units for thermal conductivity reporting in US customary units, especially in HVAC, building materials, and engineering documents based on Imperial standards.
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Can I use this converter for transient heat transfer situations?
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No, the units and conversion assume steady-state heat transfer and may not fully capture transient or non-uniform heat flow conditions.
Key Terminology
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Kilocalorie (IT)/hour/meter/°C
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A unit of thermal conductivity defined as the heat flow of one kilocalorie per hour through 1 meter thickness with a 1 °C temperature difference.
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Btu (th) inch/second/sq. foot/°F
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An Imperial unit indicating 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 measuring the ability to conduct heat.