What is the difference between a Calorie on food label and calorie in science?

Calorie on food label (food calorie):

- Also known as large calorie or kilocalorie (kcal).

- Represents the amount of energy required to raise the temperature of 1 kilogram of water by 1 degree Celsius.

- Used to indicate the energy content of food and beverages.

- Provides an estimate of the energy a person can obtain from consuming a specific food or drink and helps maintain energy balance and body weight management.

Calorie in science (small calorie or gram calorie):

- Represents the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius.

- Primarily used in scientific measurements and calculations, such as in thermodynamics, chemistry, and physiology.

- Expresses the energy content of small-scale systems, chemical reactions, or biological processes at a more precise level compared to food calories.