TDEE Calculator

Total Daily Energy Expenditure (TDEE) is the number of calories you burn in a full day — resting metabolism plus everything you do. Find your maintenance calories, then get cutting, maintenance, and bulking targets built from it.

What Is TDEE?

Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in 24 hours. It has four parts: your basal metabolic rate (BMR, 60–70% of the total), the thermic effect of food (about 10%, the energy spent digesting meals), non-exercise activity (NEAT — walking, fidgeting, chores), and deliberate exercise. Add them together and you get the number that decides whether you lose, maintain, or gain weight: eat below it and you lose; eat at it and you stay stable; eat above it and you gain.

That single rule is why TDEE is the most useful number in nutrition. Every diet that works does so by creating a gap between intake and TDEE, whatever its branding. Knowing your TDEE turns guesswork into a plan.

How TDEE Is Calculated

First, BMR is estimated from age, sex, height, and weight. This calculator offers three formulas (see the BMR calculator for the full comparison): Mifflin-St Jeor as the default, revised Harris-Benedict, and Katch-McArdle for people who know their body fat percentage — check yours with the body fat calculator if you want the lean-mass version.

Then BMR is multiplied by an activity factor:

The most common mistake is overestimating activity. A desk worker who lifts three times a week is usually “lightly active”, not “moderately active”. When in doubt, pick one level lower — it is easier to add calories later than to explain a stalled cut. The USDA MyPlate site helps turn any calorie target into balanced meals, and the National Heart, Lung, and Blood Institute explains how energy balance fits into long-term weight control.

Cutting, Maintaining, and Bulking

• Cutting: eat 250–500 kcal below TDEE. A 500 kcal deficit loses roughly 0.5 kg of fat per week. Bigger deficits lose weight faster but cost more muscle and hunger — aggressive cuts (−1,000) suit short periods only, and never below your BMR for long.
• Maintenance: eat at TDEE. Weight stays roughly stable, which is itself a goal — many people spend years yo-yoing because they never practise maintenance.
• Lean bulking: eat 250–500 kcal above TDEE with resistance training. The body can only build about 0.25–0.5 kg of muscle per week, so a modest surplus builds muscle with minimal fat; a huge surplus mostly adds fat.

Whichever goal you pick, protein is the priority: 1.6–2.0 g per kilogram of body weight daily if you train. The calorie calculator converts your chosen target into protein, carb, and fat grams, and your daily water target covers the hydration side of training.

Why Your Real TDEE May Differ

Formulas are population averages. Your actual burn varies with muscle mass, hormones, sleep, stress, medication, and even how much you fidget. The gold standard is a self-check: eat a consistent target for 2–3 weeks and watch your weight trend. Losing faster than expected? Your real TDEE is higher than the estimate — eat a little more. Not moving? It is lower — drop 100–200 kcal and recheck. A ±200 kcal adjustment window is completely normal.

Recalculate after every 5 kg of weight change, because a lighter (or heavier) body burns a different amount. And if you are setting a weight goal in the first place, check your BMI and ideal weight range so the target itself is sensible.

Tips for Using Your TDEE

• Be honest about activity. Overestimating is the number one reason cuts stall.
• Track weekly averages. Daily weight bounces with water and food; the weekly trend is the truth.
• Don’t eat back exercise calories twice. If your activity level already includes training, adding workout calories on top double-counts.
• Protect muscle on a cut. Keep protein high and keep lifting — the scale dropping fast is not a win if half of it is muscle.
• Take diet breaks. After 8–12 weeks of cutting, 1–2 weeks at maintenance restores hormones and adherence.

Example TDEEs for Three People

Abstract formulas become concrete with real people. All three examples below use the Mifflin-St Jeor equation for BMR, with cutting set 500 kcal below TDEE and lean bulking set 300 kcal above it:

Notice the spread: the very active young man burns over 1,000 kcal more per day than the lightly active woman, even though their weights differ by only 10 kg. Activity, not size alone, is what separates a 1,800 kcal maintenance from a 2,900 kcal one. If your own TDEE surprises you, check your activity level first — it is the input most people get wrong.

NEAT: The Calorie Burn You Forget

NEAT — non-exercise activity thermogenesis — is the energy of everything that is not sleeping, eating, or deliberate exercise: walking to the bus, standing, fidgeting, doing chores, taking the stairs. For most people it runs to a few hundred calories a day, but it varies enormously between individuals. Two office workers with identical gym routines can differ by 300 to 500 kcal a day purely because one walks and stands more while the other sits still for ten hours.

This is why step counts matter more than they seem. Adding 5,000 daily steps burns roughly 200 to 250 kcal for an average adult — about the same as a 30-minute run, spread across the day without any gym time. A standing desk, walking meetings, parking further away, and taking stairs are not fitness folklore; they are the cheapest way to raise TDEE without adding training load. When a cut stalls despite a correct gym programme, a collapsed NEAT — sitting more because dieting makes you tired — is often the hidden cause.

The 3-Week Self-Check Protocol

Formulas give you a starting number; only your body gives you the real one. Run this check: eat a fixed daily target for three full weeks, weigh yourself each morning under identical conditions, and compare weekly averages rather than daily readings. If the average is falling by 0.25 to 0.5 kg per week, your target is right for cutting. If it is flat, your real TDEE is lower than the estimate — drop the target by 100 to 200 kcal and run another three weeks. If it is falling faster than 1 kg per week, eat a little more; very fast loss costs muscle.

The discipline is in changing one variable at a time and waiting long enough to see through water noise. People who adjust daily chase noise; people who adjust every three weeks chase fat. Keep a simple log — target, weekly average weight, and one line on hunger and training performance — and the right number reveals itself within a month or two.

Plateaus: Why Weight Loss Stops

Almost every cut hits a plateau around 8 to 12 weeks, and it feels like failure. It is mostly physiology: a lighter body burns less, dieting quietly reduces fidgeting and daily movement, hunger hormones rise while fullness hormones fall, and the body becomes more efficient at the same activity. Combined, these effects can erase a 300 to 500 kcal deficit without any change in food intake.

The fix is not to slash calories further. First, audit tracking — portion creep after months of dieting is the most common real cause. Second, take a planned diet break: one to two weeks at maintenance restores hormones, energy, and adherence, and most people resume losing afterwards. Third, add movement rather than cutting food: extra steps raise TDEE without deepening hunger. If you have been cutting for months without a break, the break is the intervention, not a reward for later. Your calorie calculator target should be recalculated after every 5 kg of change, since the old number quietly stops applying.

TDEE for Different Lifestyles

Activity level is the input most people get wrong, so it helps to see the same resting burn translated through every level. The table below holds BMR fixed at 1,600 kcal and shows what each activity multiplier does to the daily total. The gap between sedentary and extra active is 1,120 kcal — more than most meals — which is why an honest activity choice matters more than the choice of BMR formula.

Most people belong one level lower than they first choose. A desk worker who trains three evenings a week is usually lightly active, not moderately active, because the other fifteen waking hours are spent sitting. When in doubt, pick the lower level and add calories later if weight falls too fast — it is far easier to add food than to explain a stalled cut.

The Four Parts of TDEE in Detail

Total daily expenditure is a sum of four parts, and each part responds to different levers. Understanding them separately stops the common mistake of trying to fix a diet problem with exercise, or an activity problem with food.

Basal Metabolic Rate (BMR)

The largest part, 60 to 70% of the total, spent keeping the organs running at rest. It is set mostly by size, muscle mass, age, and sex, and it changes slowly — over months, as weight and muscle change. The BMR calculator estimates it with three formulas and explains each one.

Thermic Effect of Food (TEF)

About 10% of daily intake, spent digesting and processing meals. Protein costs the most to process, then carbohydrates, then fat — one more reason high-protein diets feel slightly more expensive to the body. Meal frequency barely changes the total: it is the composition and size of intake that matter.

Non-Exercise Activity (NEAT)

Everything that is not sleeping, eating, or deliberate exercise: walking, standing, fidgeting, chores, and stairs. NEAT varies enormously between people and, crucially, it falls quietly during dieting, as tired bodies move less without noticing. Guarding NEAT — steps, standing, daily movement — is often what separates a successful cut from a stalled one.

Deliberate Exercise

Training sessions, sports, and workouts. The most visible part and, for most people, the smallest: an hour of hard training a few times a week adds a few hundred calories on training days, averaged across the week. Exercise matters enormously for health, muscle, and mood — but as a calorie lever, daily movement usually beats it.

• To raise TDEE fast: move more all day — steps and standing beat extra gym sessions.
• To raise TDEE permanently: build muscle, which raises the resting floor a little and the capacity for activity a lot.
• To protect TDEE while cutting: keep protein high, keep lifting, and watch step counts for quiet collapse.

Cutting Without Losing Muscle

A cut that loses equal parts fat and muscle is a failure disguised as success: the scale falls, but strength, shape, and metabolism all fall with it. The cut that works keeps the deficit modest, protein high, and training hard, so the weight lost is overwhelmingly fat.

1. Set the deficit at 250 to 500 kcal below TDEE — never below BMR for long stretches.
2. Set protein at 1.6 to 2.0 grams per kilogram of body weight, spread across three or four meals.
3. Keep lifting with the same weights and volume as before the cut; do not switch to light weights and high repetitions.
4. Walk daily and guard your step count, since NEAT is the first thing dieting quietly removes.
5. Weigh weekly averages, not daily readings, and judge the cut over three-week blocks.
6. Take a diet break of one to two weeks at maintenance after 8 to 12 weeks of cutting.

• Strength falling for two weeks running is the earliest warning that muscle is being lost — raise calories slightly and check protein.
• Constant hunger and poor sleep mean the deficit is too deep; raise intake by 200 kcal and accept the slower pace.
• Weight flat for three weeks with honest tracking means maintenance has dropped — recalculate the target rather than slashing further.

For macro grams at your cutting target, use the calorie calculator, and for the hydration side of training, your daily water target.

Bulking Without Gaining Excess Fat

Muscle gain is slow — the body can build only about 0.25 to 0.5 kg of muscle a week — so a large surplus mostly adds fat, not muscle. A modest surplus of 250 to 500 kcal, paired with hard training and high protein, builds muscle with minimal fat gain, and the fat that does arrive is easy to remove later.

• Surplus of 250 kcal: lean gains, minimal fat, the patient choice — best for people who already carry some fat.
• Surplus of 500 kcal: faster gains with more fat alongside — suits lean beginners who struggle to eat enough.
• Protein at 1.6 to 2.0 g/kg: the same range as cutting, since muscle building needs the same raw material.
• Train progressively: add weight or repetitions over time — a surplus without progressive training becomes fat, not muscle.
• Cap the bulk: 8 to 12 weeks, then reassess body fat with the body fat calculator before deciding whether to continue or cut.

Refeeds and Diet Breaks

Long cuts grind people down: hunger hormones rise, fullness hormones fall, energy and mood dip, and adherence crumbles. Planned breaks reverse much of that without reversing fat loss, because a week or two at maintenance costs almost no progress and buys a great deal of sustainability.

1. After 8 to 12 weeks of cutting, raise intake to maintenance for one to two weeks.
2. Keep protein and training unchanged — only the calories rise, mostly from carbohydrates.
3. Expect the scale to jump 1 to 2 kg in the first days: that is glycogen and water refilling, not fat.
4. Judge the break by energy, sleep, hunger, and training performance, not by the scale.
5. Return to the cut afterwards at the recalculated target, since your weight has changed.

A single high day — a refeed — is a smaller version of the same idea: one day at maintenance inside a cutting week. It helps some people psychologically, but the evidence for a metabolic effect from one day is weak. Diet breaks of a week or more have the stronger case, because hormones and adherence need days, not hours, to recover. Either way, the weekly average is what decides fat loss, so a planned break inside an otherwise disciplined month changes the outcome barely at all.

TDEE and Age

Resting burn falls with age, mostly because muscle mass declines, and TDEE follows it down. The table below applies the moderately active multiplier (1.55) to the BMR-by-age figures for a 70 kg, 170 cm man, so the size of the decline is concrete: about 310 kcal a day between age 20 and age 60 at the same weight and activity. That is a full meal’s worth of difference, and it explains why the eating habits of youth quietly stop working in middle age.

The decline is not destiny. Resistance training preserves the muscle that drives BMR, and daily movement preserves the NEAT that drives the rest — trained 60-year-olds routinely out-burn sedentary 30-year-olds. Recalculate your target every few years as a habit, and treat a rising waistline in middle age as a signal to move more and eat a little less, not as an inevitable part of ageing. Your BMI and ideal weight range give the weight context for whatever target you set.

Signs Your TDEE Estimate Is Off

Estimates are starting points, and the body issues corrections within weeks. Learn to read them, and the right number reveals itself without endless calculator shopping.

• Losing faster than 1 kg a week on a planned 500 kcal deficit: your real TDEE is higher than the estimate — eat more.
• Weight flat for three weeks on a planned deficit with honest tracking: your real TDEE is lower — drop 100 to 200 kcal.
• Gaining on a supposed maintenance intake: the activity level was overstated, or intake is undercounted — check both before adjusting.
• Exhaustion and stalled training on a cut: the deficit is too deep or the diet break is overdue.
• Rapid early loss that then stops: the first drop was water and glycogen, not fat — judge from week three onward.

Adjust one variable at a time and wait three weeks. People who change food, training, and targets all at once never learn which change mattered, and they repeat the same confusion at every plateau.

Frequently Asked Questions

Is TDEE the same as maintenance calories?

Yes. Maintenance calories are your TDEE — the intake at which your weight stays stable. Cutting and bulking targets are built by subtracting from or adding to it.

How often should I recalculate my TDEE?

After every 5 kg of weight change, after a big activity change (new job, new training programme), or every few months as a habit.

Why is my friend’s TDEE higher at the same weight?

Muscle mass, height, age, sex, and daily movement all shift the number. Two people at 70 kg can differ by 500 kcal or more.

Should I use a fitness tracker instead?

Trackers estimate burn from heart rate and movement and are useful for trends, but they commonly overestimate by 10–30%. Use the formula as your anchor and the tracker as a secondary signal.

What if my TDEE seems too low?

Check your inputs first — especially activity level and weight units. If the numbers are right, remember the formula is an average: verify with 2–3 weeks of real tracking and adjust by 100–200 kcal based on what actually happens.

Should I include my workouts in the activity level or add them separately?

Pick one method, never both. If your activity level already reflects your training — for example, moderately active for 3 to 5 sessions a week — do not add workout calories on top, or you will double-count the same burn and stall your cut. If you prefer a sedentary base, you may add measured workout calories instead, but track them honestly.

Does building muscle raise TDEE much?

At rest, only modestly: muscle burns roughly 13 kcal per kilogram per day, so 5 kg of new muscle adds about 65 kcal. The bigger effect is indirect — training itself burns calories, fitter people move more all day, and a muscular body handles larger food intakes without fat gain. Lift for strength and health, and count the activity, not just the resting burn.

Does TDEE change on rest days?

Yes, but less than people think. A rest day without training burns a few hundred fewer calories than a training day, mostly from the missing session and slightly lower NEAT. Most people do better with a flat daily target based on the weekly average than with different targets for different days, which invites accounting errors.

Can I use TDEE for maintenance only?

Absolutely — maintenance is the most underrated goal in nutrition. Holding a healthy weight steadily for a year, without yo-yoing, improves metabolic health more than repeated cycles of loss and regain. Eat at TDEE, weigh weekly, and adjust by 100 kcal whenever the trend drifts.

Why does my fitness tracker disagree with the calculator?

Trackers estimate burn from heart rate and movement, and they commonly overestimate by 10 to 30%, especially for strength training and daily movement. Use the formula as the anchor and the tracker as a secondary signal for relative activity — which days were busier — rather than as an absolute calorie count.

Should I recalculate TDEE when I change jobs?

Yes. A move from a physical job to a desk job, or the reverse, can shift TDEE by 300 to 500 kcal a day — larger than most diet adjustments. Recalculate with the new activity level and watch the weight trend for three weeks to confirm.

Disclaimer: TDEE formulas are estimates for general information only, not medical or dietary advice. Individual energy needs vary. Consult a doctor or registered dietitian before major diet changes, especially with a medical condition.