Convert Calories per Gram-Celsius to BTU per Pound-Fahrenheit
Instantly convert Calories per Gram-Celsius (cal/(g·°C)) to BTU per Pound-Fahrenheit (BTU/(lb·°F)) with our free online calculator.
Formula: cal/(g·°C) to BTU/(lb·°F) — multiply by 0.999331
Reference Table
| Calories per Gram-Celsius (cal/(g·°C)) | BTU per Pound-Fahrenheit (BTU/(lb·°F)) |
|---|---|
| 1 | 0.999331 |
| 5 | 4.99666 |
| 10 | 9.99331 |
| 25 | 24.9833 |
| 50 | 49.9666 |
| 100 | 99.9331 |
How to Convert Calories per Gram-Celsius to BTU per Pound-Fahrenheit
Formula
To convert Calories per Gram-Celsius (cal/(g·°C)) to BTU per Pound-Fahrenheit (BTU/(lb·°F)): multiply by 0.999331
Step-by-Step
- Start with your value in Calories per Gram-Celsius (cal/(g·°C)).
- Multiply by 0.999331 to perform the conversion.
- The result is your value expressed in BTU per Pound-Fahrenheit (BTU/(lb·°F)).
Conversion Factor
1 cal/(g·°C) = 0.999331 BTU/(lb·°F)
Reverse Factor
1 BTU/(lb·°F) = 1.00067 cal/(g·°C)
Worked Example
Convert 25 Calories per Gram-Celsius to BTU per Pound-Fahrenheit: 25 cal/(g·°C) = 24.9833 BTU/(lb·°F)
About Calorie per Gram-Celsius (cal/(g·°C))
A CGS-system specific-heat unit historically central to chemistry, food science, and biochemistry. By the original 1824 definition of the calorie (the energy needed to raise 1 g of water by 1 °C at 14.5-15.5 °C), water has a specific heat of exactly 1.000 cal/(g·°C) — the basis on which both the unit and the water-specific-heat property coevolved. Numerically identical to kcal/(kg·°C) since both ratios scale the same way. Used heavily in: pre-1990s chemistry textbooks (Atkins, McMurry, Solomons), nutrition-science papers, calorimetry-experiment education (Differential Scanning Calorimetry DSC instruments per ASTM E1269 still produce data convertible to cal/(g·°C) units for legacy comparison), pharmaceutical excipient characterization in older USP monographs, and food-energy / bomb-calorimetry research per AOAC Official Methods 968.06. Convert cal/(g·°C) to J/(kg·K) by multiplying by 4,184; to BTU/(lb·°F) by dividing by 1 (they're numerically identical since both calibrate to water = 1).
About BTU per Pound-Fahrenheit (BTU/(lb·°F))
An imperial specific-heat unit (≈ 4,186.8 J/(kg·K)) widely used in US HVAC, petroleum engineering, thermodynamics, and process-engineering work. By the BTU's definition (1 BTU = heat to raise 1 lb of water by 1 °F at 60 °F), water has a specific heat of exactly 1.000 BTU/(lb·°F) — numerically identical to water's value in cal/(g·°C) since both unit systems calibrate to the same physical material. US steam tables (Keenan, Keyes, Hill, Moore; Power's Steam Tables), ASHRAE Handbook fundamentals chapters on humidification + air-property calculations, petroleum-reservoir thermal-recovery simulators (CMG STARS, Computer Modelling Group), and Perry's Chemical Engineers' Handbook all default to BTU/(lb·°F) for cp / cv values. Reference values: ideal air cp = 0.240 BTU/(lb·°F), cv = 0.171 BTU/(lb·°F); structural steel 0.107 BTU/(lb·°F); aluminum 0.214 BTU/(lb·°F); typical engineering polymer 0.3-0.5 BTU/(lb·°F). Convert BTU/(lb·°F) to J/(kg·K) by multiplying by 4,186.8; to kJ/(kg·K) by multiplying by 4.187.
Quick Facts
- 1 Calorie per Gram-Celsius equals 0.999331 BTU per Pound-Fahrenheit
- 1 BTU per Pound-Fahrenheit equals 1.00067 Calories per Gram-Celsius
- Calorie per Gram-Celsius is a unit of specific heat capacity
- BTU per Pound-Fahrenheit is a unit of specific heat capacity
- This conversion is commonly used in thermal design, material selection, and climate modelling
- The Calorie per Gram-Celsius belongs to the metric system
- The BTU per Pound-Fahrenheit belongs to the imperial system
Common Calorie per Gram-Celsius to BTU per Pound-Fahrenheit Conversions
| Calories per Gram-Celsius (cal/(g·°C)) | BTU per Pound-Fahrenheit (BTU/(lb·°F)) |
|---|---|
| 0.01 | 0.00999331 |
| 0.1 | 0.0999331 |
| 0.25 | 0.249833 |
| 0.5 | 0.499666 |
| 1 | 0.999331 |
| 2 | 1.99866 |
| 3 | 2.99799 |
| 5 | 4.99666 |
| 10 | 9.99331 |
| 15 | 14.99 |
| 20 | 19.9866 |
| 25 | 24.9833 |
| 50 | 49.9666 |
| 75 | 74.9498 |
| 100 | 99.9331 |
| 250 | 249.833 |
| 500 | 499.666 |
| 1000 | 999.331 |
| 5000 | 4996.66 |
| 10000 | 9993.31 |
Understanding Calories per Gram-Celsius
The Calorie per Gram-Celsius (symbol: cal/(g·°C)) is a unit of specific heat capacity. A CGS-system specific-heat unit historically central to chemistry, food science, and biochemistry. By the original 1824 definition of the calorie (the energy needed to raise 1 g of water by 1 °C at 14.5-15.5 °C), water has a specific heat of exactly 1.000 cal/(g·°C) — the basis on which both the unit and the water-specific-heat property coevolved. Numerically identical to kcal/(kg·°C) since both ratios scale the same way. Used heavily in: pre-1990s chemistry textbooks (Atkins, McMurry, Solomons), nutrition-science papers, calorimetry-experiment education (Differential Scanning Calorimetry DSC instruments per ASTM E1269 still produce data convertible to cal/(g·°C) units for legacy comparison), pharmaceutical excipient characterization in older USP monographs, and food-energy / bomb-calorimetry research per AOAC Official Methods 968.06. Convert cal/(g·°C) to J/(kg·K) by multiplying by 4,184; to BTU/(lb·°F) by dividing by 1 (they're numerically identical since both calibrate to water = 1).
It belongs to the metric measurement system.
Calories per Gram-Celsius are commonly used in thermal design, material selection, and climate modelling.
Understanding BTU per Pound-Fahrenheit
The BTU per Pound-Fahrenheit (symbol: BTU/(lb·°F)) is a unit of specific heat capacity. An imperial specific-heat unit (≈ 4,186.8 J/(kg·K)) widely used in US HVAC, petroleum engineering, thermodynamics, and process-engineering work. By the BTU's definition (1 BTU = heat to raise 1 lb of water by 1 °F at 60 °F), water has a specific heat of exactly 1.000 BTU/(lb·°F) — numerically identical to water's value in cal/(g·°C) since both unit systems calibrate to the same physical material. US steam tables (Keenan, Keyes, Hill, Moore; Power's Steam Tables), ASHRAE Handbook fundamentals chapters on humidification + air-property calculations, petroleum-reservoir thermal-recovery simulators (CMG STARS, Computer Modelling Group), and Perry's Chemical Engineers' Handbook all default to BTU/(lb·°F) for cp / cv values. Reference values: ideal air cp = 0.240 BTU/(lb·°F), cv = 0.171 BTU/(lb·°F); structural steel 0.107 BTU/(lb·°F); aluminum 0.214 BTU/(lb·°F); typical engineering polymer 0.3-0.5 BTU/(lb·°F). Convert BTU/(lb·°F) to J/(kg·K) by multiplying by 4,186.8; to kJ/(kg·K) by multiplying by 4.187.
It belongs to the imperial measurement system.
BTU per Pound-Fahrenheit are commonly used in thermal design, material selection, and climate modelling.
Why Convert Calories per Gram-Celsius to BTU per Pound-Fahrenheit?
Converting between Calories per Gram-Celsius and BTU per Pound-Fahrenheit is a frequent requirement for engineers, scientists, and students working with specific heat capacity values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate specific heat capacity conversion is essential.
Frequently Asked Questions
How do I convert Calories per Gram-Celsius to BTU per Pound-Fahrenheit?
A CGS-system specific-heat unit historically central to chemistry, food science, and biochemistry. To convert Calories per Gram-Celsius to BTU per Pound-Fahrenheit, multiply by 0.999331. For example, 25 cal/(g·°C) equals 24.9833 BTU/(lb·°F).
How many BTU per Pound-Fahrenheit are in 1 Calorie per Gram-Celsius?
There are 0.999331 BTU per Pound-Fahrenheit in 1 Calorie per Gram-Celsius.
How many Calories per Gram-Celsius are in 1 BTU per Pound-Fahrenheit?
There are 1.00067 Calories per Gram-Celsius in 1 BTU per Pound-Fahrenheit.
What is the formula for Calorie per Gram-Celsius to BTU per Pound-Fahrenheit conversion?
The formula is: multiply by 0.999331. This means 1 cal/(g·°C) = 0.999331 BTU/(lb·°F).
Is a Calorie per Gram-Celsius bigger than a BTU per Pound-Fahrenheit?
Yes. One Calorie per Gram-Celsius is larger than one BTU per Pound-Fahrenheit because 1 cal/(g·°C) equals 0.999331 BTU/(lb·°F), which is less than 1.
When do you need to convert between Calories per Gram-Celsius and BTU per Pound-Fahrenheit?
An imperial specific-heat unit (≈ 4,186. Calorie per Gram-Celsius and BTU per Pound-Fahrenheit are both specific heat units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.