Calorie (thermochemical) to British Thermal Unit Converter
1 cal = 0.0039656668 BTU
FORMULA
1 cal = 0.0039656668 BTU
CONVERSION TABLE
| Calorie (thermochemical) (cal) | British Thermal Unit (BTU) |
|---|---|
| 1 cal | 0.0039656668 BTU |
| 5 cal | 0.019828 BTU |
| 10 cal | 0.039657 BTU |
| 25 cal | 0.099142 BTU |
| 50 cal | 0.198283 BTU |
| 100 cal | 0.396567 BTU |
| 250 cal | 0.991417 BTU |
| 500 cal | 1.9828 BTU |
| 1,000 cal | 3.9657 BTU |
COMMON VALUES
RELATED CONVERSIONS
About Calorie (thermochemical) (cal)
The small calorie (cal) is the energy needed to raise one gram of water by one degree Celsius at standard pressure. While largely replaced by the joule in scientific contexts (1 cal = 4.184 J exactly), the calorie remains in use in chemistry and is the basis for the food Calorie (kilocalorie).
About British Thermal Unit (BTU)
The British Thermal Unit is the energy needed to raise one pound of water by one degree Fahrenheit. Despite being an imperial unit, the BTU remains standard in the US for rating HVAC systems (a typical home furnace produces 80,000-100,000 BTU/h) and for natural gas pricing.
How to Convert Calorie (thermochemical) to British Thermal Unit
The conversion formula is: 1 cal = 0.0039656668 BTU. To convert from Calorie (thermochemical) (cal) to British Thermal Unit (BTU), use the formula above or the interactive converter at the top of this page.
FAQ
How many British Thermal Unit in 1 Calorie (thermochemical)?
1 Calorie (thermochemical) (cal) equals 0.0039656668 British Thermal Unit (BTU).
How to convert Calorie (thermochemical) to British Thermal Unit?
Multiply the Calorie (thermochemical) value by 0.0039656668 to get the equivalent in British Thermal Unit. Formula: 1 cal = 0.0039656668 BTU
What is the formula for Calorie (thermochemical) to British Thermal Unit conversion?
1 cal = 0.0039656668 BTU
Glossary
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Calorie
A unit of energy. The small calorie (cal) heats 1g of water by 1°C; the food Calorie (kcal) is 1000 small calories.
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BTU (British Thermal Unit)
The amount of heat needed to raise the temperature of one pound of water by one degree Fahrenheit.
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Electronvolt
A unit of energy equal to the kinetic energy gained by an electron accelerated through 1 volt.
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Joule
The SI unit of energy, equal to the work done by a force of one newton acting over a distance of one meter (1 J = 1 N·m = 1 kg·m²/s²).