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Heat Transfer

BTU/(hr·ft·°F)tocal/(cm·s·°C)

Convert British thermal units per hour-foot-Fahrenheit (BTU/(hr·ft·°F)) to calories per centimetre-second-Celsius (cal/(cm·s·°C)).

Factor1 BTU/(hr·ft·°F) = 0.004136555 cal/(cm·s·°C)

Converter

BTU/(hr·ft·°F)

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

Result
0.413656cal/(cm·s·°C)

Rendered to 6 significant figures.

Formula

Formula
cal/(cm·s·°C) = BTU/(hr·ft·°F) × 0.004136555

Multiply any value in British thermal units per hour-foot-Fahrenheit by 0.004136555 to obtain the value in calories per centimetre-second-Celsius.

Worked example

Convert 100 BTU/(hr·ft·°F) to cal/(cm·s·°C).

  1. 01Start with 100 BTU/(hr·ft·°F).
  2. 02Multiply by the conversion factor: 100 × 0.004136555 = 0.413656 cal/(cm·s·°C).
Result100 BTU/(hr·ft·°F) = 0.413656 cal/(cm·s·°C)

Conversion table

BTU/(hr·ft·°F)cal/(cm·s·°C)
10.0041366
20.0082731
50.020683
100.041366
200.082731
500.20683
1000.41366
2000.82731
5002.0683
10004.1366

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/(hr·ft·°F) to cal/(cm·s·°C)?
1 BTU/(hr·ft·°F) equals 0.004136555 cal/(cm·s·°C). To convert, multiply the value in British thermal units per hour-foot-Fahrenheit by 0.004136555.
How do I convert 1 BTU/(hr·ft·°F) to cal/(cm·s·°C)?
1 BTU/(hr·ft·°F) = 0.00413656 cal/(cm·s·°C). For any value, multiply by 0.004136555.
How do I convert cal/(cm·s·°C) back to BTU/(hr·ft·°F)?
Divide by the same factor — or equivalently, multiply by 241.747. So 1 cal/(cm·s·°C) = 241.747 BTU/(hr·ft·°F).
When would I need to convert British thermal unit per hour-foot-Fahrenheit to calorie per centimetre-second-Celsius?
Thermal conductivity conversions between BTU/(hr·ft·°F) and cal/(cm·s·°C) 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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