1 kcal = 1 kcal =4 184 joules =4. 184 kj. Calorie (calorie for short) is defined as the amount of heat required to raise 1 degree Celsius to 1 gram of water at 1 atmospheric pressure, and Calorie is the unit of energy.

As the legal unit of food calories, joules are widely used in Europe, while calories are used in the United States. It is still widely used in nutrition measurement and fitness manuals, and the international standard unit of energy is joule. Although Joule is the legal unit in Chinese mainland and Taiwan Province, calories are still widely used in Chinese mainland and Taiwan Province due to the tradition. We often associate calories with food, but in fact they apply to any substance that contains energy.

A simple algorithm for the basic calorie of human body's basic metabolism;

The daily calories needed by adults = the basic calories needed for basic metabolism of human body+the calories needed for physical activity+the calories needed for digesting food.

Heat required for digesting food = 10%x (minimum heat required for basic metabolism of human body+heat required for physical activity)

Daily calorie requirement of adults = 1. 1x (minimum basic calorie required by basic metabolism of human body+calorie required by physical activity)

Woman:

18-30 years old: 14.6x weight (kg) +450

3 1-60 years old: 8.6x weight (kg) +830

Over 60 years old: 10.4x Weight (kg) +600

Man:

18-30 years old: 15.2x body weight (kg) +680

3 1-60 years old: 1 1.5x body weight (kg) +830

Over 60 years old: 13.4x Weight (kg) +490

Baidu Encyclopedia-Calories