Calorie / TDEE Calculator
Calculate your BMR, TDEE and daily calorie needs for weight loss or gain. Free Mifflin-St Jeor based calculator.
Frequently asked questions
- Which formula does this calculator use?
- It uses the Mifflin-St Jeor equation to estimate your BMR, then multiplies by an activity factor to get your TDEE, the calories you burn per day.
- What do the activity levels mean?
- Sedentary covers little or no exercise, light is one to three days a week, moderate is three to five days a week, and the two highest options cover very active and extra active lifestyles.
- How many calories should I eat to lose weight?
- The tool shows targets for mild loss at about 0.25 kg per week and steadier loss at about 0.5 kg per week, plus a target for gaining weight.
- Are the results medically exact?
- No. They are population-level estimates, so treat them as a starting point and consult a professional for personal medical advice.
This tool runs entirely in your browser. No data is uploaded anywhere.