Both calories and kilocalories are units of calories; 1 calorie = 1 kilocalorie; calorie is a colloquial term and kilocalorie is a written formal term. Calories and calories, joules and kilojoules are also units of calories. Calories, calories, dacas, kilocalories and joules, kilojoules, belong to different systems of caloric units. Calories are referred to as cards, and the conversion factor between cards and joules is 4.186, 1 card = 4.186 joules, 1 daka = 1 kcal = 1000 calories = 4186 joules = 4.186 kJ. Usually eating, snacking, drinking drinks, drinking milk, etc., eating three major types of nutrients, including sugar, fat, protein, after absorption into the body can produce heat, 1 gram of fat produces about 9 kcal, that is, 9 calories. 1 gram of sugar and protein produce about 4 kcal, that is, 4 calories, the same amount of fat produces a lot more heat than sugar and protein, so, weight loss The same amount of fat produces a lot more calories than sugar and protein, so it is important to control the intake of fat when losing weight.