Convert BTU/(h·ft·°F) to cal/(s·cm·°C)
1 BTU per hour foot degree Fahrenheit (BTU/(h·ft·°F)) = 0.00413655513 calories per second centimetre degree Celsius (cal/(s·cm·°C)). 1 cal/(s·cm·°C) = 241.74705 BTU/(h·ft·°F). Example: 15 BTU/(h·ft·°F) = 15 × 0.00413655513 = 0.06204832695 cal/(s·cm·°C).
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1 BTU/(h·ft·°F) = 0.00413655513 cal/(s·cm·°C)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BTU per hour foot degree Fahrenheit to calorie per second centimetre degree Celsius converter to paste a column from Excel.
How to Convert BTU/(h·ft·°F) to cal/(s·cm·°C)
- 1 BTU/(h·ft·°F) = 0.00413655513 cal/(s·cm·°C)
- 1 cal/(s·cm·°C) = 241.74705 BTU/(h·ft·°F)
- Example: convert 15 BTU/(h·ft·°F) to cal/(s·cm·°C): 15 BTU/(h·ft·°F) = 15 × 0.00413655513 cal/(s·cm·°C) = 0.06204832695 cal/(s·cm·°C)
Reference conditions. cal/(s·cm·°C): Thermochemical calorie (4.184 J)
Formula
cal/(s·cm·°C) = BTU/(h·ft·°F) × 0.004136555129951
or cal/(s·cm·°C) = BTU/(h·ft·°F) ÷ 241.7470500416
Derivation from SI units:
- 1 BTU_IT/(h·ft·°F) = 1055.05585262 J ÷ (3600 s × 0.3048 m × 5/9 K) = 1.730734666 W/(m·K) (exact)
- 1 cal_th/(s·cm·°C) = 4.184 J ÷ (1 s × 0.01 m × 1 K) = 418.4 W/(m·K) (exact)
- 1 BTU/(h·ft·°F) = 1.730734666371 W/(m·K) ÷ 418.4 W/(m·K) per cal/(s·cm·°C) = 0.004136555129951 cal/(s·cm·°C)
Both units are defined exactly, so the factor is exact. BTU/(h·ft·°F) definition: BTU per hour foot degree Fahrenheit; cal/(s·cm·°C) definition: calorie per second centimetre degree Celsius.
Worked examples
- A reading of 0.1 BTU/(h·ft·°F) converts to 0.000413655513 cal/(s·cm·°C).
0.1 BTU/(h·ft·°F) × 0.00413655513 = 0.000413655513 cal/(s·cm·°C) - A value of 9.4 BTU/(h·ft·°F) is 0.03888361822 cal/(s·cm·°C).
9.4 BTU/(h·ft·°F) × 0.00413655513 = 0.03888361822 cal/(s·cm·°C)
BTU/(h·ft·°F) to cal/(s·cm·°C) conversion table
| BTU/(h·ft·°F) | cal/(s·cm·°C) |
|---|---|
| 0.014 BTU/(h·ft·°F) | 0.00005791177182 cal/(s·cm·°C) |
| 0.02 BTU/(h·ft·°F) | 0.0000827311026 cal/(s·cm·°C) |
| 0.023 BTU/(h·ft·°F) | 0.00009514076799 cal/(s·cm·°C) |
| 0.1 BTU/(h·ft·°F) | 0.000413655513 cal/(s·cm·°C) |
| 0.35 BTU/(h·ft·°F) | 0.001447794295 cal/(s·cm·°C) |
| 1 BTU/(h·ft·°F) | 0.00413655513 cal/(s·cm·°C) |
| 9.4 BTU/(h·ft·°F) | 0.03888361822 cal/(s·cm·°C) |
| 26 BTU/(h·ft·°F) | 0.1075504334 cal/(s·cm·°C) |
| 118 BTU/(h·ft·°F) | 0.4881135053 cal/(s·cm·°C) |
| 232 BTU/(h·ft·°F) | 0.9596807901 cal/(s·cm·°C) |
Where it's used
BTU/(h·ft·°F) are used for US heat transfer textbooks and ASHRAE data, while calories per second centimetre degree Celsius appear in older scientific literature. Both measure thermal conductivity (k, λ), so the conversion is a fixed factor.
BTU/(h·ft·°F) to other thermal conductivity units
| Conversion | 1 BTU/(h·ft·°F) equals |
|---|---|
| BTU per hour foot degree Fahrenheit to calorie per second centimetre degree Celsius | 0.00413655513 cal/(s·cm·°C) |
| BTU per hour foot degree Fahrenheit to watt per metre kelvin | 1.730734666 W/(m·K) |
| BTU per hour foot degree Fahrenheit to BTU inch per hour square foot degree Fahrenheit | 12 BTU·in/(h·ft²·°F) |
| BTU per hour foot degree Fahrenheit to milliwatt per metre kelvin | 1730.734666 mW/(m·K) |
| BTU per hour foot degree Fahrenheit to kilocalorie per hour metre degree Celsius | 1.488163944 kcal/(h·m·°C) |
| BTU per hour foot degree Fahrenheit to watt per centimetre kelvin | 0.01730734666 W/(cm·K) |
Frequently asked questions
How many calories per second centimetre degree Celsius are in 1 BTU per hour foot degree Fahrenheit?
1 BTU/(h·ft·°F) = 0.00413655513 cal/(s·cm·°C).
How do I convert BTU per hour foot degree Fahrenheit to calories per second centimetre degree Celsius?
Multiply the value in BTU/(h·ft·°F) by 0.00413655513, or divide it by 241.74705. For example, 15 BTU/(h·ft·°F) × 0.00413655513 = 0.06204832695 cal/(s·cm·°C).
Is the BTU/(h·ft·°F) to cal/(s·cm·°C) conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "British thermal unit_IT per hour foot degree Fahrenheit [Btu_IT/(h · ft · °F)]".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "calorie_th per centimeter second degree Celsius [cal_th/(cm · s · °C)]".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert BTU/(h·ft·°F) to cal/(s·cm·°C). Retrieved October 25, 2026, from https://scientificconverters.com/thermal-conductivity/btu-per-hour-foot-fahrenheit-to-calories-per-second-centimeter-celsius/
IEEE
Scientific Converters, "Convert BTU/(h·ft·°F) to cal/(s·cm·°C)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/thermal-conductivity/btu-per-hour-foot-fahrenheit-to-calories-per-second-centimeter-celsius/