Kcal and kj conversion: 1kcal = 4186J (joule) = 4.186kJ (kilojoule).

kcal is also called a large calorie, a unit of heat equal to 1000cal (calories), or the amount of heat required to raise the temperature of 1kg of water by 1°C (symbol kCal), which is defined as the amount of heat required to raise 1g of water by 1°C at 1 atmospheric pressure. The unit of heat is the unit of measurement used to express heat, the most commonly used unit of heat in nutrition is the kCal, and the International System of Units derived unit of heat and the Chinese legal unit of measurement is the joule.

Kilojoule is the unit of heat, joule (abbreviated as joule, abbreviated as kJ), is the international unit of heat and the unit of work, kilojoule refers to one thousand joules. Now commonly used kilojoules to measure the calories contained in food and the calories consumed per unit of time by a certain kind of exercise, people generally control their body weight by controlling the calories of food intake and calories consumed by exercise.

Introduction to joules

1 calorie = 4.19 joules, a large calorie, also noted as a capital C, most commonly used in food labeling, is equivalent to the number of calories needed to raise 1,000 grams of water from 14.5 degrees Celsius to 15.5 degrees Celsius at 1 atmosphere, which is equal to about 4,186 joules. The calorie (calorie) is the unit of energy that is still widely used in nutritional measurements and fitness manuals, and the international standard unit of energy is the joule (joule). As the legal unit of food calories, the joule is commonly used in Europe and the calorie in the United States.

The calorie is the phonetic translation of the French calorie, which is the unit of calculation of calories, and there are large calories and small calories. 1 large calorie is equivalent to the heat used to raise 1 liter of water by 1 degree Celsius at 1 standard atmosphere; 1 large calorie is equal to 1,000 small calories.