Calories, kilocalories, calories and kilojoules are all units of heat.
Calorie (abbreviated as "Calorie" for short) is defined as the heat required to raise 1 gram of water at 1 atmospheric pressure 1 degree Celsius. 1 kcal is equal to 1000 calories, about 4 186 joules. Calorie, equivalent to engineering unit kilocalories per kilogram (kilocalories), is mostly used in nutrition measurement and fitness manuals.
Extended data
Calculation method of food calories
The heat of food samples is defined as: 1ml (with the mass of 1g). The heat required for each increase of 1 degree Celsius is 4.8 17 joules when heated. ?
(1) Staple food: such as rice, porridge and noodles. If 80 kcal is used as a unit of calculation, the calories of a bowl of rice, porridge or noodles of ordinary size commonly used in daily life are equivalent to 80 kcal.
② Meat, tofu and eggs: 37 grams of lean meat and 20 grams of fat meat are 80 calories. 125 grams of milk, two teaspoons or half a tablespoon of oil are all 80 calories. It is worth noting that 1 boiled egg has 80 calories, but 1 fried egg has 120 calories.
3 Vegetables: 600 grams of any vegetable is equal to 80 calories.
④ Seafood:100g is about 80 calories.
⑤ Fruits: 300g watermelon and 2 oranges are 80 calories.
Baidu Encyclopedia: Food Calorimeter