1 kcal = 1 kcal = 1000 calories = 1000 calories

1 kJ = 1000 Joule

1 kcal/1 kcal =4. 184 kJ

1 card = 4.182 joules

2. Different notation:

The calorie, also known as the capital letter C, is most commonly used in food labeling, which is about equal to the internal energy of 4 186 joules.

Small card, also known as cal, is more common in scientific research documents, 1000 small card = 1 big card (1Calorie).

For example, "this soda contains 200 calories", because soda is food, the calories here are calories. In fact, this soda has 200,000 calories, which is also applicable to exercise. When you see "jogging for 4 kilometers burns 200 calories", the calories here are also calories, which means 200,000 calories.

3, the food content is different: a biscuit contains 350 calories, which may only need 100 calories to digest, so that the body will gain 250 calories of fat, but eating a food with only 50 calories needs 150 calories to digest.

Baidu encyclopedia-food heat meter

Baidu encyclopedia-calories