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TDEE Calculator and calorie goal.
Discover how much your body burns per day and what calorie goal makes sense for your objective. It’s the same calculation that Vivi does in the app, open for anyone to use.
Common questions
- Which formula does the calculator use?
- Mifflin-St Jeor for basal metabolic rate, multiplied by your activity level. It is the estimate most widely used in clinical nutrition for adults.
- Is the number exact?
- No, and no formula is. Lean mass, genetics, and how much you move without noticing vary a lot between people. Treat it as a starting point. Inside the app, your expenditure gets recalculated from your own weight history and what you log, and that number ends up worth more than the formula.
- How big a deficit should I run?
- The app works with a range instead of a single number, and it will not let your target fall below the calorie safety floor. An aggressive deficit costs more muscle and is harder to hold for weeks. Anyone with a health condition or on medication talks to a doctor first.
- Do I need an account to use it?
- No. The calculator runs in your browser and does not store what you typed.