Nowadays, kilojoules are often used to measure the calories contained in food and the calories consumed in a certain exercise unit time. People generally control their weight by controlling the calories consumed in food and the calories consumed in exercise.
Unit conversion
1 kilojoule (KJ)=0.239 KCAL.
1 kcal = 4.184 KJ.
1 card =4. 184 joules
1 joule =0.239 calories
Extended data
The daily calories required by a normal person are related to his weight.
The relationship between calorie intake per hour and body weight is about 1 kcal/hour/kg, that is, 4. 186 kj/hour/kg. So the normal average daily calories required by an adult weighing 50 kg are as follows:
Average calories required? = 4. 186 kJ x24 hours x50 kg =5023.2 kJ.
On average, for every kilogram of weight gain, the body's required calories will increase by 0. 1MJ.
Generally speaking, an adult man needs about 9.25 to 10.09 million joules per day; An adult woman needs about 7.98 to 8.82 million joules per day. The average primary school student needs about 9.25 million joules of calories per day, which is similar to the minimum calorie required by an adult man.
Calories are the calculation unit of calories. 1 calorie is the heat required to raise the temperature of 1 g of water by 1 degree after the food we eat is burned. A kilocalorie is the heat required to raise the temperature of 1 liter of water by 1 degree, which is also called a kcal.
Kilocalorie = kcal
1 kcal = 1000 kcal
1 kJ = 1000 Joule
1 kcal/1kcal =1000 kcal
1 kcal/1 kcal =4. 184 kJ
1 card = 4.182 joules
The international standard unit is kilojoules, but we generally talk about calories.
502 kJ =502/4. 184 kcal = 1 19.98 kcal