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Heat Transfer

BTU·in/(hr·ft²·°F)tokcal/(hr·m·K)

Convert British thermal unit-inches per hour-square foot-Fahrenheit (BTU·in/(hr·ft²·°F)) to kilocalories per hour-metre-kelvin (kcal/(hr·m·K)).

Factor1 BTU·in/(hr·ft²·°F) = 0.1240137 kcal/(hr·m·K)

Converter

BTU·in/(hr·ft²·°F)

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.124014kcal/(hr·m·K)

Rendered to 6 significant figures.

Formula

Formula
kcal/(hr·m·K) = BTU·in/(hr·ft²·°F) × 0.1240137

Multiply any value in British thermal unit-inches per hour-square foot-Fahrenheit by 0.1240137 to obtain the value in kilocalories per hour-metre-kelvin.

Worked example

Convert 1 BTU·in/(hr·ft²·°F) to kcal/(hr·m·K).

  1. 01Start with 1 BTU·in/(hr·ft²·°F).
  2. 02Multiply by the conversion factor: 1 × 0.1240137 = 0.124014 kcal/(hr·m·K).
Result1 BTU·in/(hr·ft²·°F) = 0.124014 kcal/(hr·m·K)

Conversion table

BTU·in/(hr·ft²·°F)kcal/(hr·m·K)
10.12401
20.24803
50.62007
101.2401
202.4803
506.2007
10012.401
20024.803
50062.007
1000124.01

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU·in/(hr·ft²·°F) to kcal/(hr·m·K)?
1 BTU·in/(hr·ft²·°F) equals 0.1240137 kcal/(hr·m·K). To convert, multiply the value in British thermal unit-inches per hour-square foot-Fahrenheit by 0.1240137.
How do I convert 1 BTU·in/(hr·ft²·°F) to kcal/(hr·m·K)?
1 BTU·in/(hr·ft²·°F) = 0.124014 kcal/(hr·m·K). For any value, multiply by 0.1240137.
How do I convert kcal/(hr·m·K) back to BTU·in/(hr·ft²·°F)?
Divide by the same factor — or equivalently, multiply by 8.063627. So 1 kcal/(hr·m·K) = 8.06363 BTU·in/(hr·ft²·°F).
When would I need to convert British thermal unit-inch per hour-square foot-Fahrenheit to kilocalorie per hour-metre-kelvin?
Thermal conductivity conversions between BTU·in/(hr·ft²·°F) and kcal/(hr·m·K) are common in insulation specification, heat-exchanger design, and building-envelope analysis. SI units (W/(m·K)) appear in international standards and simulation tools, while BTU/(hr·ft·°F) is standard in US codes and vendor datasheets.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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