Calories, kilocalories, calories and kilojoules are all units of heat, and the conversion between them is: 1 card = 1 card =4. 186 joules; 1 kcal = 1 kcal = 1000 kcal = 1000 calories =4 186 joules =4. 186 kj.

Calories (calories for short) are defined as the heat required to raise 1 gram of water 1 degree Celsius at 1 atmospheric pressure. 1 kcal is equal to 1000 calories, about 4 186 joules. The calorie of fat is about 900 calories per100g; Sugar and protein have only 400 calories per100g.

Extended data:

Calorie (Cal for short), transliterated from English Calorie, is defined as the heat required to raise 1 gram of water to 1 degree Celsius at 1 atmospheric pressure; Calorie is an energy unit, which is still widely used in nutrition measurement and fitness manual. The international standard unit of energy is joule.

As the legal unit of food calories, joules are widely used in Europe, while calories are used in the United States. Although Joule is the legal unit in Chinese mainland and Taiwan Province Province, it is still widely used in Chinese mainland and Taiwan Province Province because of tradition.

References:

Baidu encyclopedia-calories