TDEE is how much energy your body burns each day

Your TDEE is the number of calories your body burns in a day, and it is the one figure that decides whether your weight climbs, drops, or sits still. Coaches call that break even point your maintenance calories. Eat that amount and the scale holds steady.

Most people guess at this number or copy a friend's target, then wonder why the weight will not move. Your total daily energy expenditure, the long name behind TDEE, is personal. It runs on your size, your muscle, and how much you move, so a 120 pound office worker and a 200 pound roofer live in different worlds.

What your TDEE actually is

Three things add up to your daily burn. The biggest is your basal metabolic rate, the calories you would spend lying in bed all day just keeping your heart, lungs, and brain running. On top of that sits the energy you spend digesting meals, plus everything you do on your feet.

Your basal metabolic rate does most of the work. It accounts for roughly 60% to 70% of the calories you burn, which is why two people at the same weight can still land in different places once activity is added in.

Your resting metabolism, or BMR, accounts for about 60% to 70% of the calories you burn in a day, before you take a single step.

Maintenance calories keep the scale where it is

Your maintenance level is simply your TDEE written as a daily target. Match your intake to that number and your body has exactly the fuel it needs, nothing left over to store and no shortfall to cover. That is why the scale can sit still even though what lands on your plate changes day to day.

Move away from that line on purpose and you get results. Drop about 500 below it and you lose close to a pound a week, the math behind our 500 calorie deficit guide. Push above it with a controlled surplus and you gain, the plan in our lean bulking breakdown. Knowing the calories to maintain weight is what makes either choice deliberate.

Eat at your maintenance calories and the scale barely moves. Eat under it and you lose, eat over it and you gain.

How many calories to maintain weight, by the numbers

Government figures give a useful starting range. The Cleveland Clinic puts most adult women between 1,600 and 2,400 calories a day to hold their weight, and most adult men between 2,000 and 3,000, depending on age and activity. Those are averages, not your exact number, but they frame what normal looks like.

The spread is wide for a reason. A small, older, sedentary adult sits near the bottom, while a tall, young, active one sits near the top. The two example rows come from the formula in the next section, at a desk bound day and at a few weekly workouts.

How to find maintenance calories

You can pin down your own number with a formula dietitians trust, the Mifflin-St Jeor equation. For men it reads 10 times weight in kilograms, plus 6.25 times height in centimeters, minus 5 times age, plus 5. For women the only change is minus 161 at the end instead of plus 5. That result is your basal metabolic rate.

Say a 30 year old woman stands 165 centimeters and weighs 68 kilograms. Her BMR works out to about 1,400. Multiply by 1.2 for a desk bound day and she lands near 1,680, or by 1.55 for a few weekly workouts and she reaches about 2,170. That second figure is her maintenance level on a training week.

The multiplier is the activity step, and it runs from 1.2 for a sedentary week up to 1.9 for someone with a physical job who also trains. The equation is not perfect. It lands within about 10% of a lab measurement for most people, so treat the result as a smart estimate rather than a promise.

If mental math is not your thing, a TDEE calculator does the same steps in seconds, and a BMR calculator, a maintenance calories calculator, or a metabolic rate calculator all run on the same equation underneath. CalMeal can also calculate calories for maintenance straight from your logged meals, then check it against your real results. Pair any estimate with a week of honest tracking and counting your macros to see if the number holds.

Why your maintenance number drifts over time

Your maintenance number is not fixed for life. Digestion alone burns roughly 10% of what you eat, and that share climbs with protein, which costs 15% to 30% of its own calories to break down, against 5% to 10% for carbohydrates and almost nothing for fat. A protein heavy day quietly nudges your burn up.

Protein has the highest thermic effect of any macronutrient, raising your burn by 15% to 30% of the calories it contains, far above carbs or fat.

Dieting shifts things the other way. Cut calories hard for weeks and your body trims its output, resting burn dips and you move a little less without noticing. That is why a number that worked in January can feel too generous by March, and why long diets often need a reset.

What your maintenance number means for your goals

Once you know your maintenance number, every goal gets concrete. Weight loss becomes a set subtraction, muscle gain becomes a set addition, and holding steady becomes a target you can actually hit instead of a vague hope. The number turns diet advice into arithmetic you control.

It also guards you against eating too little for too long. After a diet, easing back up to your break even point lets your energy, workouts, and mood recover while the scale stays put. Plenty of people feel better and look leaner by eating at that level for a stretch, not below it.

The catch is that all of this rests on knowing what you actually eat. Rough portion habits can hide hundreds of calories, so a photo log or a quick weigh in beats eyeballing. Our guide on how your hand reads serving sizes is a fast way to sanity check plates when a scale is not handy.

Frequently asked questions

How many calories should I eat to maintain my weight?

Start with the calories you burn in a day and eat that same amount. For most adult women that lands between 1,600 and 2,400, and for most adult men between 2,000 and 3,000. Track for two weeks and adjust by 100 to 200 if the scale drifts.

Are maintenance calories the same as total daily energy expenditure?

Yes, they point at one number. Total daily energy expenditure is the calories your body spends in a day, and your break even intake is what you eat to match it. Line the two up and your weight holds.

How accurate is a TDEE calculator?

A TDEE calculator or a BMR calculator gives a solid estimate, usually within about 10% for most people. It cannot see your exact activity or muscle, so treat it as a starting point. Your own two week trend is the real proof.

How often should I recalculate my maintenance number?

Recheck after a weight change of about 10 pounds, a big shift in training, or every few months. Small changes rarely matter. A quick recalculation keeps the calories to maintain weight honest as your body changes.

Knowing your maintenance calories takes the guesswork out of every meal, and CalMeal makes it simple by turning a photo of your plate into calories and macros you can trust. Start tracking today, watch your real number take shape, and set your goal from there. Get the app here: iOS or Android.