Calorie, also known as capital letter C, is a common unit of calories, which is used to measure the calories and energy of food, and is most commonly used in food labels. 1 calorie is equivalent to the heat required to raise 1 000 grams of water from 14.5 degrees Celsius to 15.5 degrees Celsius at1atmospheric pressure, which is about 4 186 joules. 1 kcal (1 kcal) = 1000 kcal, 1 kcal = 4. 186 joules. 1000 coke divided by 4. 186 coke is about 239. 12 calories, 239. 12 calories =0.239 12 calories. Therefore, one kilojoule is equal to 0.239 12 kilocalories.

According to this formula, 800 kJ = 800× 0.2389 = 19 1 calories, so 800kj is equal to191calories. The unit of heat is calorie. Until the recommended unit of heat "kilojoule" (1 calorie =4. 19 joules) is widely understood and accepted, the traditional unit of heat is still adopted.

Application fields of large calorie units:

1, Nutrition: In nutrition, calories are often used to indicate the energy content in food and drinks. Food labels usually indicate the calories contained in each serving, which helps people understand the contribution of various foods to daily energy intake, so as to make a reasonable meal plan.

2. Diet management: Calorie is an important indicator of diet management. People can control their weight and lose weight by controlling their calorie intake. For example, calculate the daily calories needed, control the intake of calories, and achieve the goal of healthy weight loss.

3. Exercise and exercise consumption: Calories are also used to indicate the energy consumed by exercise and physical activities. Many sports equipment and sports apps will calculate the number of calories burned according to the duration and intensity of exercise to help people understand the effect and energy consumption of exercise.

4. Medical care and health: In the medical field, heat is used to evaluate patients' energy needs and consumption. For patients with specific diseases or rehabilitation stages, it is necessary to calculate the appropriate calorie intake according to their personal situation.

5. Household energy consumption: In addition to diet and exercise, heat can also be used to represent the energy consumption in daily life, such as measuring the energy consumption of heating in winter, or evaluating the energy consumption of households and enterprises.