British Thermal Unit to Calorie (thermochemical) Converter
1 BTU = 252.1644 cal
FORMULA
1 BTU = 252.1644 cal
CONVERSION TABLE
| British Thermal Unit (BTU) | Calorie (thermochemical) (cal) |
|---|---|
| 1 BTU | 252.1644 cal |
| 5 BTU | 1,260.82 cal |
| 10 BTU | 2,521.64 cal |
| 25 BTU | 6,304.11 cal |
| 50 BTU | 12,608.22 cal |
| 100 BTU | 25,216.44 cal |
| 250 BTU | 63,041.1 cal |
| 500 BTU | 126,082.2 cal |
| 1,000 BTU | 252,164.4 cal |
COMMON VALUES
RELATED CONVERSIONS
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.
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).
How to Convert British Thermal Unit to Calorie (thermochemical)
The conversion formula is: 1 BTU = 252.1644 cal. To convert from British Thermal Unit (BTU) to Calorie (thermochemical) (cal), use the formula above or the interactive converter at the top of this page.
FAQ
How many Calorie (thermochemical) in 1 British Thermal Unit?
1 British Thermal Unit (BTU) equals 252.1644 Calorie (thermochemical) (cal).
How to convert British Thermal Unit to Calorie (thermochemical)?
Multiply the British Thermal Unit value by 252.1644 to get the equivalent in Calorie (thermochemical). Formula: 1 BTU = 252.1644 cal
What is the formula for British Thermal Unit to Calorie (thermochemical) conversion?
1 BTU = 252.1644 cal
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).