Calorie (A Unit of Heat Energy)
A calorie, abbreviated as cal, is transliterated from English. It is defined as the heat required to raise the temperature of 1 gram of water by 1 degree Celsius under 1 standard atmospheric pressure. The calorie is a unit of heat widely used in nutritional measurement and fitness guides, while the international standard unit of energy is the joule.
Daily Calorie Requirement for Adults
Daily calorie requirement for adults = Basal metabolic heat + Heat consumed by physical activity + Heat consumed by food digestion.
Heat consumed by food digestion = 10% × (Basal metabolic minimum heat + Heat consumed by physical activity)
Daily calorie requirement for adults = 1.1 × (Basal metabolic minimum heat + Heat consumed by physical activity)
Male: 9250 - 10090 kilojoules
Female: 7980 - 8820 kilojoules
Note: The daily energy intake from food should not be less than 5000 to 7500 kilojoules, which is the minimum energy required to sustain normal human vital activities.
Simple Formula for Basal Metabolic Heat Requirement
Female: Basal calories (kcal) = Weight (jin) × 9
Male: Basal calories (kcal) = Weight (jin) × 10
Precise Formula for Basal Metabolic Heat Requirement
Female
Age Formula
18–30 years old 14.6 × Weight (kg) + 450
31–60 years old 8.6 × Weight (kg) + 830
Over 60 years old 10.4 × Weight (kg) + 600
Male
Age Formula
18–30 years old 15.2 × Weight (kg) + 680
31–60 years old 11.5 × Weight (kg) + 830
Over 60 years old 13.4 × Weight (kg) + 490