Calorie to BTU Calculator
Convert Calories (cal) to British Thermal Units (BTU)
1.983 BTU
1 Calorie = 0.003966 British Thermal Units
Understanding Calories and BTUs
What is a Calorie?
A calorie (cal) is a unit of energy equal to the amount of heat needed to raise the temperature of one gram of water by one degree Celsius at standard atmospheric pressure. In nutrition, we commonly use the kilocalorie (kcal), which is 1,000 small calories.
What is a British Thermal Unit (BTU)?
A British Thermal Unit (BTU) is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. BTUs are commonly used in the power industry and for rating heating and cooling systems.
Common Uses
- Measuring food energy content (Calories)
- Rating air conditioning units (BTUs)
- Calculating heating requirements (BTUs)
- Energy content in fuels (both units)