TDEE Calculator

The single most important number in any nutrition plan, your daily calorie burn.

Your Daily Calorie Burn

Mifflin-St Jeor BMR × activity factor

How to use this calculator

  1. Enter gender, age, height in cm and weight in kg.
  2. Pick the activity level that honestly matches your weekly movement, most people overestimate.
  3. Tap calculate to see your BMR (resting burn) and TDEE (total burn).
  4. Use the targets table to plan a sensible loss, maintain or gain calorie level.

What is TDEE?

Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns in a day, including basal metabolism, the thermic effect of food, planned exercise, and non-exercise activity (fidgeting, walking, standing).

We calculate it in two steps: first your BMR using the Mifflin-St Jeor equation (the most accurate for the general population), then multiply by an activity factor from 1.2 (sedentary) to 1.9 (very active).

What your TDEE means

Your TDEE is your maintenance calories, eat that much and your weight stays stable. From there:

  • Weight loss: eat 300-500 kcal below TDEE for ~0.3-0.5 kg/week of fat loss.
  • Weight gain: eat 300-500 kcal above TDEE for slow lean-muscle gain.
  • Body recomposition: eat at or slightly below TDEE with high protein and resistance training.

Re-check every 4-6 weeks or after a 3-5 kg change in weight, your TDEE shifts as your body changes.

How TDEE shapes your diet

Once you know your TDEE, you can stop guessing portion sizes. A 1,800 kcal day looks dramatically different depending on whether it's built around whole grains, dal and vegetables versus packaged snacks, but the calorie ceiling is the same.

Pair this with our macro splitter to set protein, carb and fat targets, then build meals around them. For structured weekly plans, see our weight-loss program.

Frequently Asked Questions

Who this helps

This calculator is most useful if you're working on:

A calorie number on its own won't change anything. A plan that turns your TDEE into satisfying daily meals does. Book a free consultation to make it real.

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