Convert Calories per Gram Degree Celsius to BTU per Pound °F
1 calorie per gram degree Celsius (cal/(g·°C)) = 1 BTU per pound degree Fahrenheit (BTU/(lb·°F)). 1 BTU/(lb·°F) = 1 cal/(g·°C). Example: 15 cal/(g·°C) = 15 × 1 = 15 BTU/(lb·°F).
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1 cal/(g·°C) = 1 BTU/(lb·°F)
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk calorie per gram degree Celsius to BTU per pound degree Fahrenheit converter to paste a column from Excel.
How to Convert Calorie per Gram Degree Celsius to BTU per Pound °F
- 1 cal/(g·°C) = 1 BTU/(lb·°F)
- 1 BTU/(lb·°F) = 1 cal/(g·°C)
- Example: convert 15 cal/(g·°C) to BTU/(lb·°F): 15 cal/(g·°C) = 15 × 1 BTU/(lb·°F) = 15 BTU/(lb·°F)
Reference conditions. cal/(g·°C): International Table calorie (4.1868 J).
Formula
BTU/(lb·°F) = cal/(g·°C) × 1
Derivation from SI units:
- 1 cal_IT/(g·°C) = 4.1868 J/(g·K) = 4186.8 J/(kg·K).
- 1 BTU_IT/(lb·°F) = 4186.8 J/(kg·K) exactly (the BTU and the calorie scale the same way).
- 1 cal/(g·°C) = 4186.8 J/(kg·K) ÷ 4186.8 J/(kg·K) per BTU/(lb·°F) = 1 BTU/(lb·°F)
Both units are defined exactly, so the factor is exact. Calorie per Gram Degree Celsius definition: calorie per gram degree Celsius; BTU per Pound °F definition: BTU per pound degree Fahrenheit.
Worked examples
- A reading of 0.2 cal/(g·°C) converts to 0.2 BTU/(lb·°F).
0.2 cal/(g·°C) × 1 = 0.2 BTU/(lb·°F) - A value of 0.4 cal/(g·°C) is 0.4 BTU/(lb·°F).
0.4 cal/(g·°C) × 1 = 0.4 BTU/(lb·°F)
Calorie per Gram Degree Celsius to BTU per Pound °F conversion table
| Calories per Gram Degree Celsius (cal/(g·°C)) | BTU per Pound °F (BTU/(lb·°F)) |
|---|---|
| 0.03 cal/(g·°C) | 0.03 BTU/(lb·°F) |
| 0.09 cal/(g·°C) | 0.09 BTU/(lb·°F) |
| 0.11 cal/(g·°C) | 0.11 BTU/(lb·°F) |
| 0.2 cal/(g·°C) | 0.2 BTU/(lb·°F) |
| 0.22 cal/(g·°C) | 0.22 BTU/(lb·°F) |
| 0.24 cal/(g·°C) | 0.24 BTU/(lb·°F) |
| 0.4 cal/(g·°C) | 0.4 BTU/(lb·°F) |
| 0.5 cal/(g·°C) | 0.5 BTU/(lb·°F) |
| 0.8 cal/(g·°C) | 0.8 BTU/(lb·°F) |
| 1 cal/(g·°C) | 1 BTU/(lb·°F) |
Where it's used
Calories per Gram Degree Celsius are used for older chemistry and food-science texts, while BTU per pound degree Fahrenheit appear in US HVAC and process design. Both measure specific heat capacity, so the conversion is a fixed factor.
Calorie per Gram Degree Celsius to other specific heat capacity units
| Conversion | 1 cal/(g·°C) equals |
|---|---|
| calorie per gram degree Celsius to BTU per pound degree Fahrenheit | 1 BTU/(lb·°F) |
| calorie per gram degree Celsius to joule per kilogram kelvin | 4186.8 J/(kg·K) |
| calorie per gram degree Celsius to kilojoule per kilogram kelvin | 4.1868 kJ/(kg·K) |
| calorie per gram degree Celsius to joule per gram kelvin | 4.1868 J/(g·K) |
| calorie per gram degree Celsius to kilocalorie per kilogram degree Celsius | 1 kcal/(kg·°C) |
Frequently asked questions
How many BTU per pound degree Fahrenheit are in 1 calorie per gram degree Celsius?
1 cal/(g·°C) = 1 BTU/(lb·°F).
How do I convert calories per gram degree Celsius to BTU per pound degree Fahrenheit?
Multiply the value in cal/(g·°C) by 1. For example, 15 cal/(g·°C) × 1 = 15 BTU/(lb·°F).
Is the cal/(g·°C) to BTU/(lb·°F) conversion exact?
Yes. Both units are defined exactly, and 1 cal/(g·°C) is exactly 1 BTU/(lb·°F).
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, "calorie_IT per gram degree Celsius".
- 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".
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 Calories per Gram Degree Celsius to BTU per Pound °F. Retrieved October 29, 2026, from https://scientificconverters.com/specific-heat/calories-per-gram-celsius-to-btu-per-pound-fahrenheit/
IEEE
Scientific Converters, "Convert Calories per Gram Degree Celsius to BTU per Pound °F," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/specific-heat/calories-per-gram-celsius-to-btu-per-pound-fahrenheit/