Find out how many calories you need a day to keep, lose or gain weight.
Enter your age (15–80), weight (30–300 kg) and height (120–230 cm).
Sex, age, weight in kilograms and height in centimetres.
Pick how active you are and whether you want to keep, lose or gain weight.
See your daily target, your BMR, and a simple split into carbohydrates, protein and fat.
With the Mifflin–St Jeor equation, which estimates your basal metabolic rate (BMR), the energy you burn at rest. It is then multiplied by an activity factor to give the calories you need to keep your weight.
About 7,700. Eating about 550 kcal less a day than you burn leads to about 0.5 kg lost a week.
Eating under about 1,200 kcal (women) or 1,500 kcal (men) a day is generally too low to follow without medical supervision.
It is an estimate. Real needs vary with muscle, genetics, health and medicines. Treat it as a starting point and adjust to how your weight changes over a few weeks.
No. Your numbers stay in your browser.