TDEE and Maintenance Calories: How Many Should You Eat?
Knowing how many calories you burn each day is the starting point for any nutrition goal. That number is your TDEE. Once you know it, eating to lose fat, maintain or gain muscle becomes simple arithmetic. Here is how to find and use it.
BMR vs TDEE
- BMR (basal metabolic rate) is the energy your body uses at complete rest just to stay alive.
- TDEE (total daily energy expenditure) is your BMR plus everything else — daily movement, exercise and digestion.
TDEE is the number that matters for setting calories, because it reflects what you actually burn in a day.
What makes up your TDEE
Your daily burn has four parts:
- BMR — the largest chunk (around 60 to 70 percent).
- NEAT — non-exercise activity like walking, fidgeting and chores (highly variable).
- Exercise — your workouts.
- TEF — the energy used to digest food (protein costs the most).
NEAT is the most variable piece and a big lever for fat loss — more daily steps meaningfully raises your TDEE.
Estimating your TDEE
Estimate BMR with an equation (for example Mifflin-St Jeor) from your age, height, weight and sex, then multiply by an activity factor:
| Activity | Multiplier |
|---|---|
| Sedentary | 1.2 |
| Lightly active | 1.375 |
| Moderately active | 1.55 |
| Very active | 1.725 |
The result is an estimate. The most accurate method is to track intake and weight for two to three weeks and find the calories that keep you stable.
Using your TDEE for any goal
Once you know maintenance:
- Lose fat: eat about 15 to 25 percent below TDEE (a calorie deficit).
- Maintain: eat at TDEE.
- Build muscle: eat about 5 to 15 percent above TDEE (a small surplus).
Set protein from the protein guide, then fill the rest with carbs and fat.
Adjusting over time
Your TDEE is not fixed — it changes with bodyweight, activity and dieting. As you lose weight, your burn drops, so progress can slow and you may need to adjust calories or steps. Re-check every few weeks against your actual trend and tweak. Treat the calculator number as a starting point, then let the scale and mirror guide adjustments.
- BMR is resting energy; TDEE is your total daily burn — use TDEE.
- NEAT (daily movement) is a big, adjustable part of your TDEE.
- Estimate TDEE from an equation, then verify with two to three weeks of tracking.
- Eat below TDEE to lose fat, at it to maintain, above it to gain.
- TDEE changes over time — re-check and adjust to your real trend.
Frequently asked questions
How do I calculate my TDEE?
Estimate your BMR from age, height, weight and sex using an equation like Mifflin-St Jeor, then multiply by an activity factor. For best accuracy, verify by tracking intake and weight for two to three weeks.
What is the difference between BMR and TDEE?
BMR is the energy you burn at complete rest. TDEE adds your daily movement, exercise and digestion on top. TDEE is the figure you use to set calories for fat loss or muscle gain.
How many calories should I eat to lose weight?
About 15 to 25 percent below your TDEE, which typically produces 0.5 to 1 percent bodyweight loss per week. Find your maintenance first, then subtract.
Why has my weight loss stalled at the same calories?
As you lose weight your TDEE falls, shrinking your deficit. Recalculate, add daily steps, or slightly reduce calories. Also check for unlogged intake and judge by the multi-week trend.
Related guides
Calorie Deficit: The Foundation of Fat Loss
What a calorie deficit is, how to calculate yours from your TDEE, how big it should be, and how to maintain it without losing muscle or your sanity.
Macronutrients Explained: Protein, Carbs and Fats
Macronutrients explained for lifters: what protein, carbohydrates and fats do, how many calories each provides, and how to set your macros for any goal.
How Much Protein Do You Need to Build Muscle?
How much protein you need per day to build muscle and lose fat, the best protein sources, and how to time and distribute it for the best results.
Bulking vs Cutting: Which Should You Do?
Bulking vs cutting explained: what each phase is, how to choose based on your body fat, how long to run them, and how to avoid the common mistakes.
This guide is general educational information, not medical advice. Train within your ability and consult a qualified professional before starting a new program if you have an injury or health condition.
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