Convert BTU per Pound °F to Calories per Gram Degree Celsius
1 BTU per pound degree Fahrenheit (BTU/(lb·°F)) = 1 calorie per gram degree Celsius (cal/(g·°C)). 1 cal/(g·°C) = 1 BTU/(lb·°F). Example: 15 BTU/(lb·°F) = 15 × 1 = 15 cal/(g·°C).
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1 BTU/(lb·°F) = 1 cal/(g·°C)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BTU per pound degree Fahrenheit to calorie per gram degree Celsius converter to paste a column from Excel.
How to Convert BTU per Pound °F to Calorie per Gram Degree Celsius
- 1 BTU/(lb·°F) = 1 cal/(g·°C)
- 1 cal/(g·°C) = 1 BTU/(lb·°F)
- Example: convert 15 BTU/(lb·°F) to cal/(g·°C): 15 BTU/(lb·°F) = 15 × 1 cal/(g·°C) = 15 cal/(g·°C)
Reference conditions. cal/(g·°C): International Table calorie (4.1868 J).
Formula
cal/(g·°C) = BTU/(lb·°F) × 1
Derivation from SI units:
- 1 BTU_IT/(lb·°F) = 4186.8 J/(kg·K) exactly (the BTU and the calorie scale the same way).
- 1 cal_IT/(g·°C) = 4.1868 J/(g·K) = 4186.8 J/(kg·K).
- 1 BTU/(lb·°F) = 4186.8 J/(kg·K) ÷ 4186.8 J/(kg·K) per cal/(g·°C) = 1 cal/(g·°C)
Both units are defined exactly, so the factor is exact. BTU per Pound °F definition: BTU per pound degree Fahrenheit; Calorie per Gram Degree Celsius definition: calorie per gram degree Celsius.
Worked examples
- A reading of 0.12 BTU/(lb·°F) converts to 0.12 cal/(g·°C).
0.12 BTU/(lb·°F) × 1 = 0.12 cal/(g·°C) - A value of 0.45 BTU/(lb·°F) is 0.45 cal/(g·°C).
0.45 BTU/(lb·°F) × 1 = 0.45 cal/(g·°C)
BTU per Pound °F to Calorie per Gram Degree Celsius conversion table
| BTU per Pound °F (BTU/(lb·°F)) | Calories per Gram Degree Celsius (cal/(g·°C)) |
|---|---|
| 0.03 BTU/(lb·°F) | 0.03 cal/(g·°C) |
| 0.09 BTU/(lb·°F) | 0.09 cal/(g·°C) |
| 0.11 BTU/(lb·°F) | 0.11 cal/(g·°C) |
| 0.12 BTU/(lb·°F) | 0.12 cal/(g·°C) |
| 0.2 BTU/(lb·°F) | 0.2 cal/(g·°C) |
| 0.24 BTU/(lb·°F) | 0.24 cal/(g·°C) |
| 0.45 BTU/(lb·°F) | 0.45 cal/(g·°C) |
| 0.5 BTU/(lb·°F) | 0.5 cal/(g·°C) |
| 0.8 BTU/(lb·°F) | 0.8 cal/(g·°C) |
| 1 BTU/(lb·°F) | 1 cal/(g·°C) |
Where it's used
BTU per Pound °F are used for US HVAC and process design, while calories per gram degree Celsius appear in older chemistry and food-science texts. Both measure specific heat capacity, so the conversion is a fixed factor.
BTU per Pound °F to other specific heat capacity units
| Conversion | 1 BTU/(lb·°F) equals |
|---|---|
| BTU per pound degree Fahrenheit to calorie per gram degree Celsius | 1 cal/(g·°C) |
| BTU per pound degree Fahrenheit to joule per kilogram kelvin | 4186.8 J/(kg·K) |
| BTU per pound degree Fahrenheit to kilojoule per kilogram kelvin | 4.1868 kJ/(kg·K) |
| BTU per pound degree Fahrenheit to joule per gram kelvin | 4.1868 J/(g·K) |
| BTU per pound degree Fahrenheit to kilocalorie per kilogram degree Celsius | 1 kcal/(kg·°C) |
Frequently asked questions
How many calories per gram degree Celsius are in 1 BTU per pound degree Fahrenheit?
1 BTU/(lb·°F) = 1 cal/(g·°C).
How do I convert BTU per pound degree Fahrenheit to calories per gram degree Celsius?
Multiply the value in BTU/(lb·°F) by 1. For example, 15 BTU/(lb·°F) × 1 = 15 cal/(g·°C).
Is the BTU/(lb·°F) to cal/(g·°C) conversion exact?
Yes. Both units are defined exactly, and 1 BTU/(lb·°F) is exactly 1 cal/(g·°C).
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 pound degree Fahrenheit".
- 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_IT per gram degree Celsius".
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 per Pound °F to Calories per Gram Degree Celsius. Retrieved October 29, 2026, from https://scientificconverters.com/specific-heat/btu-per-pound-fahrenheit-to-calories-per-gram-celsius/
IEEE
Scientific Converters, "Convert BTU per Pound °F to Calories per Gram Degree Celsius," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-heat/btu-per-pound-fahrenheit-to-calories-per-gram-celsius/