An ideal daily intake of calories varies depending on age, metabolism and levels of physical activity,
among other things.
Generally, the recommended daily calorie intake is 2,000 calories a day for women and 2,500 for men.
Calories are a measure of how much energy food or drink contains. The amount of energy you need will depend on:
The term calorie is commonly used as shorthand for kilocalorie. You will find this written as kcal on food packets. Kilojoules (kJ) are the equivalent of kilocalories within the International System of Units, and you'll see both kJ and kcal on nutrition labels. 4.2kJ is equivalent to approximately 1kcal.
To find out if you are a healthy weight, use the BMI
To maintain a healthy weight, you need to balance the amount of calories you consume through food and drink with the amount of calories you burn through physical activity.