Calorie calculator
Enter your age, weight, height and activity level: you get your basal metabolic rate and your daily needs.
Daily calorie needs
The calculation uses the Mifflin-St Jeor formula to estimate your basal metabolic rate, then multiplies it by your activity level to get your total needs (TDEE).
Losing or gaining weight
To lose weight gently, aim for a deficit of about 500 kcal a day. To gain muscle, add 200 to 300 kcal and focus on protein and strength training. These values are indicative: see a healthcare professional if in doubt.
Frequently asked questions
What is the basal metabolic rate?
It is the energy your body uses at rest to function. It is then multiplied by your activity level.
How many calories should I eat to lose weight?
A deficit of about 500 kcal a day means losing roughly 0.5 kg a week. Avoid going much lower without medical advice.
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