What is TDEE?
TDEE stands for total daily energy expenditure — every calorie your body burns in 24 hours. That includes staying alive, walking to the kitchen, your training session, fidgeting at your desk, and even digesting your lunch.
It matters because weight change follows a simple rule: eat below your TDEE and you lose weight over time, eat above it and you gain, eat at it and you hold steady. Your TDEE is your maintenance calories.
The TDEE formula
The calculation itself is a single multiplication. All the nuance lives in choosing the right activity factor.
The activity factor ranges from 1.2 (sedentary) to 1.9 (extra active).
Recap: calculating BMR first
Using the Mifflin-St Jeor equation, with weight in kg, height in cm, and age in years:
Activity multiplier table
These five levels are the standard set used by virtually every TDEE calculator. Read the descriptions carefully and be honest — this is where nearly all TDEE errors originate.
| Activity level | Multiplier | Who this describes |
|---|---|---|
| Sedentary | 1.2 | Desk job, little or no deliberate exercise |
| Lightly active | 1.375 | Light exercise or sport 1–3 days per week |
| Moderately active | 1.55 | Moderate exercise or sport 3–5 days per week |
| Very active | 1.725 | Hard exercise 6–7 days per week |
| Extra active | 1.9 | Physical job plus hard daily training, or twice-daily sessions |
Full worked example
Let's run the whole calculation end to end for a 30-year-old man weighing 80 kg at 180 cm, who trains four times a week and otherwise works a desk job — a moderately active profile, so a multiplier of 1.55.
Male, 30 years, 80 kg, 180 cm, moderately active
Mifflin-St Jeor for BMR, then the 1.55 moderate activity multiplier.
- 1
Weight term
10 × 80 = 800
- 2
Height term
6.25 × 180 = 1,125
- 3
Age term
5 × 30 = 150
- 4
BMR — combine and apply the male constant
800 + 1,125 − 150 + 5 = 1,780 cal
- 5
Multiply by the activity factor
1,780 × 1.55 = 2,759
Result
TDEE ≈ 2,759 calories per day to maintain weight
To see how much the multiplier matters, here is the same 1,780-calorie BMR run through every activity level:
| Activity level | Calculation | TDEE |
|---|---|---|
| Sedentary | 1,780 × 1.2 | 2,136 cal |
| Lightly active | 1,780 × 1.375 | 2,448 cal |
| Moderately active | 1,780 × 1.55 | 2,759 cal |
| Very active | 1,780 × 1.725 | 3,071 cal |
| Extra active | 1,780 × 1.9 | 3,382 cal |
The spread between sedentary and extra active is over 1,200 calories a day. That is why an honest activity assessment matters more than which BMR equation you picked.
The four parts of TDEE
The activity multiplier is a shorthand for four distinct components. Knowing them helps you understand why your real burn drifts from the estimate.
| Component | Share of TDEE | What it covers |
|---|---|---|
| BMR | ~60–70% | Organs, breathing, circulation — the cost of being alive |
| NEAT | ~15–30% | Walking, standing, fidgeting, chores — all non-exercise movement |
| TEF | ~10% | Thermic effect of food: the energy used to digest and absorb meals |
| EAT | ~5–15% | Exercise activity — deliberate training sessions |
Note that TEF is already baked into the activity multipliers, and protein has a notably higher thermic effect than carbohydrate or fat — one of several reasons a higher-protein diet helps during a deficit.
Turning TDEE into a calorie target
Your TDEE is your maintenance figure. Adjust from it according to your goal.
The rough conversion is that 7,700 calories ≈ 1 kg of body weight (about 3,500 calories ≈ 1 lb). A 500-calorie daily deficit therefore works out to roughly 0.45 kg — one pound — per week.
| Goal | Daily target | Expected rate |
|---|---|---|
| Steady weight loss | ≈ 2,259 cal (−500) | About 0.45 kg / 1 lb per week |
| Gentle weight loss | ≈ 2,459 cal (−300) | About 0.27 kg / 0.6 lb per week |
| Maintain weight | ≈ 2,759 cal | Stable |
| Lean muscle gain | ≈ 3,009 cal (+250) | About 0.23 kg / 0.5 lb per week |
Adjusting from real-world results
Every calculated TDEE is an estimate — typically accurate within about 10%. Your own body provides the correction. Here is the loop:
- Eat at your target for 2–3 weeks. Consistently. A single week contains too much water-weight noise to read anything from.
- Track your weight trend, not single readings. Weigh in at the same time each morning and compare weekly averages.
- Compare against what you expected.Losing faster than planned? Your real TDEE is higher than calculated. Not moving at all? It's lower — or the logging is drifting.
- Adjust by 100–200 calories and run another two to three weeks. Small corrections, repeated, beat large swings.
Common mistakes
- Overstating activity. The most frequent error by a wide margin. When in doubt, go one level down.
- Double-counting exercise.If your multiplier already accounts for training, don't also eat back the calories your watch says you burned.
- Trusting tracker burn estimates. Wearable calorie-burn figures are frequently generous, sometimes by 25–30%.
- Never recalculating. Lose 10 kg and your BMR — and therefore your TDEE — genuinely falls. Recalculate every 5 kg or so.
- Under-logging intake.Cooking oils, drinks, sauces, and bites while cooking add up fast. This is the single biggest reason a correct TDEE appears to “not work”.
Frequently asked questions
How do I calculate my TDEE?+
First calculate your BMR using the Mifflin-St Jeor equation, then multiply it by an activity factor between 1.2 and 1.9 depending on how much you move. For example, a BMR of 1,780 with a moderately active lifestyle gives 1,780 × 1.55 = about 2,759 calories per day.
What is the difference between BMR and TDEE?+
BMR is what your body burns at complete rest — organs, breathing, circulation. TDEE is your total daily burn including movement, exercise, and the energy used to digest food. TDEE is always higher, typically 20 to 90 percent above BMR depending on activity.
How many calories should I eat to lose weight?+
A deficit of roughly 500 calories per day below your TDEE produces about 0.45 kg (1 lb) of loss per week for most people. A 300 to 500 calorie deficit is sustainable for the majority; larger deficits get harder to maintain and risk muscle loss.
Which activity multiplier should I choose?+
Most people overestimate. If you have a desk job and train three or four times a week, 1.375 to 1.55 is usually closer to reality than 1.725. Pick the lower option when you are between two levels, then adjust after two or three weeks based on how your weight actually responds.
Is TDEE the same every day?+
No. Your TDEE fluctuates with how much you move, how well you slept, and even the weather. The number from a formula is a weekly average, which is why you judge progress from weight trends over two to three weeks rather than day-to-day changes.
Do I need to eat back the calories I burn exercising?+
Not if you used an activity multiplier, because exercise is already built into that number. Adding your workout calories on top double-counts them, and fitness-tracker burn estimates are often generous to begin with.
How accurate is a calculated TDEE?+
It is an estimate, usually within about 10 percent for most people. Treat it as a starting point: eat at that number consistently for two to three weeks, track your weight trend, and adjust the target based on what actually happened.
What are maintenance calories?+
Maintenance calories are simply your TDEE — the amount you can eat each day without gaining or losing weight. Eating consistently above that figure adds weight over time, and eating below it takes weight off.
How do I calculate a calorie deficit?+
Subtract your target deficit from your TDEE. Since roughly 7,700 calories equals 1 kg of body weight (about 3,500 calories per pound), a 500-calorie daily deficit produces around 0.45 kg or 1 lb of loss per week. For a TDEE of 2,759, that means eating about 2,259 calories per day.
Why am I not losing weight even though I am eating below my TDEE?+
The two usual causes are an overestimated TDEE and under-logged intake. Cooking oils, drinks, sauces, and bites while cooking add up quickly, and activity multipliers are often set too high. Non-exercise movement also drops unconsciously when you diet. Recheck your logging for a week and consider lowering your activity factor one level.
Should I recalculate my TDEE as I lose weight?+
Yes. A smaller body burns fewer calories, so both your BMR and TDEE fall as you lose weight. Recalculating every 5 kg or so keeps your target realistic and prevents the plateau that comes from eating at a maintenance level you have outgrown.
What is NEAT and why does it matter for TDEE?+
NEAT stands for non-exercise activity thermogenesis — walking, standing, fidgeting, and chores. It accounts for roughly 15 to 30 percent of daily burn and varies enormously between people. It also falls unconsciously during a diet, which is a major reason weight loss stalls even when training stays constant.
Keep learning
You have your target. Now hit it.
Hedgepal turns a photo of any meal into logged calories, protein, carbs and fats — so you can see exactly where you land against your TDEE each day.