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TDEE Calculator: Calculate Your Daily Calorie Needs

Your total daily energy expenditure (TDEE) is the estimated number of calories your body burns in a typical day. Knowing your TDEE can help you understand how many calories you need to maintain your current weight, create a reasonable calorie deficit for weight loss, or support your activity and running goals.

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Your TDEE is based on several things, including your basal metabolic rate (BMR), physical activity, everyday movement, and the energy your body uses to digest food.

Use the TDEE calculator below to estimate how many calories you burn each day.

TDEE Calculator

Enter your age, sex, height, weight, and activity level to estimate your daily calorie needs.

Your result is an estimate—not a measurement of exactly how many calories you burn. Your actual energy needs can vary from day to day.

What is Total Daily Energy Expenditure?

Total daily energy expenditure (TDEE) is the total amount of energy your body uses over the course of a day.

Think of TDEE as your body’s daily calorie budget for everything it does—from keeping your heart beating and your brain working to walking the dog, running, exercising, digesting food, and even fidgeting.

TDEE is made up of several components:

  • Basal metabolic rate (BMR): The energy your body uses to keep you alive at rest.
  • Physical activity: Calories burned through exercise such as walking, running, cycling, and strength training.
  • Non-exercise activity thermogenesis (NEAT): Calories burned through everyday movement that isn’t deliberate exercise, such as standing, cleaning, shopping, walking around the house, or moving around at work.
  • Thermic effect of food (TEF): The energy your body uses to digest, absorb, and process the food you eat.

Because your activity and food intake can change from day to day, your TDEE is best thought of as an estimate of your average daily calorie expenditure.

What is Basal Metabolic Rate (BMR)?

Your basal metabolic rate (BMR) is the amount of energy your body needs to perform its basic functions while at rest.

Even if you spent an entire day lying in bed, your body would still need energy to:

  • Keep your heart beating
  • Keep your lungs working
  • Maintain your body temperature
  • Support your brain and nervous system
  • Maintain your organs and tissues
  • Circulate blood
  • Perform other essential biological processes

That’s why your body burns calories even when you’re not exercising.

BMR is sometimes described as the number of calories you would burn if you were completely at rest for 24 hours under controlled conditions.

BMR is Not Your Daily Calorie Requirement

One important distinction is that BMR is not the number of calories you should eat each day.

Your body burns additional calories through movement, exercise, digestion, and other activities. Those calories are added to your BMR to produce your total daily energy expenditure.

For example, someone with a BMR of 1,700 calories does not necessarily need to eat only 1,700 calories—or consider 1,700 calories a required daily minimum.

If that person has a TDEE of 2,300 calories, they would need approximately 2,300 calories per day to maintain their weight over time, assuming the estimate is reasonably accurate.

This is why TDEE is generally more useful than BMR alone when you’re trying to determine how many calories to eat.

What Is the Difference Between BMR and TDEE?

The simplest way to think about it is:

BMR = calories your body needs at rest

TDEE = calories your body burns throughout the entire day

BMRTDEE
What it measuresEnergy used at restTotal daily energy expenditure
Includes exercise?NoYes
Includes everyday movement?NoYes
Includes digestion?NoYes
Useful for estimating daily calorie needs?LimitedYes
Used to calculate the other?BMR helps estimate TDEETDEE is built partly from BMR

Your BMR is therefore one piece of the TDEE equation, not a competing measurement.

How Is BMR Calculated?

There are several equations that can be used to estimate BMR. One of the most commonly used equations for adults is the Mifflin-St Jeor equation.

Mifflin-St Jeor Equation for Men

BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5

Mifflin-St Jeor Equation for Women

BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161

Because the equation uses kilograms and centimeters, you’ll need to convert your measurements if you’re starting with pounds and inches.

Example

Imagine a 40-year-old man who weighs 200 pounds and is 5 feet 10 inches tall.

After converting his weight and height to metric measurements and applying the Mifflin-St Jeor equation, we can estimate his BMR.

That number represents the approximate amount of energy his body would use at rest. His actual daily calorie expenditure would be higher because he also walks, works, exercises, eats, and performs other activities.

Why BMR Estimates Aren’t Perfect

A BMR calculator provides an estimate based on population-level equations. It does not directly measure your metabolism.

Two people who are the same age, sex, height, and weight can have different actual energy requirements because of differences in:

  • Muscle mass
  • Body-fat percentage
  • Genetics
  • Hormones
  • Fitness level
  • Body composition
  • Health and medical conditions
  • Other individual factors

For most people, a calculated BMR is best used as a starting point rather than an exact measurement.

What Factors Affect BMR?

Your BMR isn’t determined by body weight alone.

Body Size

Larger bodies generally require more energy to maintain basic physiological functions than smaller bodies.

Muscle Mass

Muscle tissue requires energy to maintain. People with more lean mass may therefore have higher resting energy expenditure than people of the same weight with less lean mass.

Age

Energy requirements often change as people age. Changes in body composition, including loss of muscle mass, can contribute to changes in resting energy expenditure.

Sex

Men and women can have different average BMRs because of differences in body size and body composition. This is one reason the Mifflin-St Jeor equation uses different constants for men and women.

Genetics and Individual Differences

Not everyone’s metabolism operates at the same rate. Genetics and other individual characteristics can influence resting energy expenditure.

Hormones and Health

Certain medical conditions, medications, and hormonal changes can affect energy expenditure. If you have a medical condition that affects metabolism, a calculator may be less accurate for you.

How Do You Calculate TDEE?

Once you have an estimated BMR, you can estimate TDEE by accounting for your activity level.

A common approach is:

TDEE = BMR × Activity Factor

The activity factor represents how much movement and exercise you typically perform.

Common activity categories include:

Activity LevelTypical DescriptionActivity Factor
SedentaryLittle exercise; mostly sitting during the day1.2
Lightly activeLight exercise or activity 1–3 days per week1.375
Moderately activeModerate exercise or activity 3–5 days per week1.55
Very activeHard exercise or physical activity 6–7 days per week1.725
Extremely activeVery hard training or highly physical work1.9

Example

Suppose your estimated BMR is 1,700 calories and you consider yourself moderately active.

1,700 × 1.55 = 2,635 calories

Your estimated TDEE would therefore be approximately 2,635 calories per day.

That does not mean you will burn exactly 2,635 calories every day. It’s an estimate of your average energy expenditure based on your reported characteristics and activity level.

The Four Main Components of TDEE

TDEE is more complicated than simply “BMR plus exercise.”

1. Basal Metabolic Rate

BMR generally represents the largest portion of your daily energy expenditure.

It is the energy your body uses to keep essential systems functioning at rest.

2. Physical Activity

This includes deliberate exercise and physical training such as:

  • Walking
  • Running
  • Cycling
  • Swimming
  • Strength training
  • Sports
  • Hiking

The amount can vary dramatically from one person to another.

3. Non-Exercise Activity Thermogenesis (NEAT)

NEAT is the energy you use for movement that isn’t planned exercise.

Examples include:

  • Walking around your house
  • Standing at work
  • Cleaning
  • Cooking
  • Shopping
  • Taking the stairs
  • Fidgeting
  • Moving around during the day

NEAT can be surprisingly important because some people naturally move much more throughout the day than others.

For someone trying to lose weight, increasing everyday movement can be a practical way to increase calorie expenditure without adding another hard workout.

4. Thermic Effect of Food

Your body uses energy to digest and process the food you eat.

This is called the thermic effect of food (TEF).

Different foods require different amounts of energy to process, and the amount of TEF is also influenced by how much you eat.

TDEE and Calories: How Many Calories Do You Need?

Your estimated TDEE gives you a useful starting point for determining your calorie intake.

If your estimated TDEE is 2,500 calories per day, eating around 2,500 calories per day would theoretically maintain your weight over time.

But real life isn’t that precise.

Your actual calorie needs can change because:

  • Your body weight changes
  • Your activity changes
  • Your exercise changes
  • Your NEAT changes
  • Your appetite changes
  • Your body adapts during weight loss
  • Your calculator estimate isn’t perfectly accurate

That’s why it’s better to use your TDEE as a starting estimate and then watch your weight trend over several weeks.

How to Use TDEE for Weight Loss

If your goal is to lose weight, you generally need to consume fewer calories than your body uses over time.

This creates a calorie deficit.

For example:

Estimated TDEE: 2,500 calories

Daily food intake: 2,000 calories

Estimated deficit: 500 calories per day

A 500-calorie daily deficit would theoretically equal approximately 3,500 calories per week.

However, weight loss is not perfectly linear. Your actual results can differ because changes in body weight involve more than simply subtracting calories from a calculator’s estimate.

As you lose weight, your calorie requirements can also change.

A Moderate Deficit Is Usually More Practical

You don’t need to create the largest possible calorie deficit to lose weight.

A more moderate deficit can be easier to maintain while still producing meaningful progress.

Aggressive restriction can make it harder to:

  • Get enough protein and nutrients
  • Fuel your workouts
  • Recover from exercise
  • Maintain muscle
  • Stick with your eating plan
  • Maintain your weight-loss results over time

The best calorie target is one that creates progress while still allowing you to eat a reasonably nutritious diet and live your life.

Should You Eat Below Your BMR to Lose Weight?

Not necessarily.

This is one of the most common misunderstandings about BMR.

BMR is an estimate of your resting energy expenditure. It is not a universal minimum calorie intake that everyone must stay above, nor is it a target you need to eat below to lose weight.

Your calorie target should be based on your overall energy needs, health, goals, and circumstances—not simply on trying to get below your BMR number.

For many people, starting with a modest deficit from estimated TDEE makes more sense.

If you are considering a very low-calorie diet, particularly if you have medical conditions or take medications, talk with a qualified healthcare professional before making a major change.

Does Exercise Increase TDEE?

Yes.

Exercise increases the amount of energy you use, which can increase your total daily energy expenditure.

Running, walking, cycling, strength training, swimming, and other forms of exercise all contribute to your overall energy expenditure.

But there’s an important catch:

Your activity level is only one part of your TDEE.

If you dramatically increase exercise while unintentionally moving less during the rest of the day, the increase in total daily calorie expenditure may be smaller than expected.

That’s another reason to think about your overall daily movement rather than focusing exclusively on calories burned during workouts.

Does Walking Increase TDEE?

Absolutely.

Walking burns energy and therefore contributes to your total daily energy expenditure.

For someone who is overweight, out of shape, or just getting started with exercise, walking can be an especially useful way to increase daily movement without the same impact and recovery demands associated with harder exercise.

You don’t need to run every day to increase your energy expenditure.

Increasing your daily steps, taking short walking breaks, walking after meals, or simply spending more time on your feet can all contribute to your daily activity.

Does Building Muscle Increase BMR?

Building and maintaining muscle can contribute to your resting energy expenditure because lean tissue requires energy to maintain.

However, the effect is often overstated.

Adding muscle is beneficial for many reasons—including strength, physical function, athletic performance, and body composition—but it doesn’t mean that gaining a small amount of muscle will suddenly cause you to burn hundreds of additional calories every day at rest.

Think of strength training as one part of a larger weight-management strategy.

How Accurate Is a TDEE Calculator?

A TDEE calculator can give you a useful estimate, but it cannot tell you exactly how many calories you burn.

The biggest reason is that your activity level is difficult to quantify precisely.

For example, two people might both describe themselves as “moderately active,” but one might walk 4,000 steps per day while the other walks 10,000 steps and works a physically demanding job.

Their actual TDEE could be very different.

Your metabolism can also change as your body weight changes.

Use Your Results as a Starting Point

The best way to refine your estimated TDEE is to compare the calculator’s prediction with what happens to your body weight over time.

For example, if you consistently eat around your estimated maintenance calories for several weeks and your average weight stays relatively stable, your actual maintenance intake may be close to that estimate.

If your weight consistently goes up or down, your actual energy needs may be different.

Daily weight fluctuations are normal, so look at trends over multiple weeks rather than individual weigh-ins.

TDEE vs. Maintenance Calories

The terms TDEE and maintenance calories are often used interchangeably, but there’s an important distinction.

TDEE is an estimate of the energy your body uses each day.

Maintenance calories are the approximate amount of food energy you would need to consume to maintain your body weight over time.

If your TDEE estimate is 2,400 calories, approximately 2,400 calories per day would be your estimated maintenance intake.

But because TDEE is an estimate, your actual maintenance calories may be higher or lower.

TDEE vs. BMR vs. RMR

You may also come across the term resting metabolic rate (RMR).

BMR and RMR are related concepts, but they aren’t the same measurement.

BMR is measured under very specific conditions intended to capture the energy required for basic physiological functions at rest.

RMR is a similar measurement of resting energy expenditure, but the testing conditions can be less restrictive.

For everyday calorie planning, the difference is usually less important than understanding the basic concept:

BMR/RMR represents resting energy expenditure, while TDEE represents total daily energy expenditure.

Frequently Asked Questions About TDEE and BMR

Is BMR the same as TDEE?

No. BMR is the amount of energy your body uses at rest, while TDEE is the total energy your body uses throughout the day.

BMR is one component of TDEE.

What is a good BMR?

There isn’t one universally “good” BMR.

Your estimated BMR depends on factors such as your age, sex, height, weight, and body composition.

A higher or lower BMR isn’t automatically better.

What is a good TDEE?

There isn’t one ideal TDEE either.

Your TDEE depends on your body size, age, sex, activity level, and other individual factors.

The useful question isn’t whether your TDEE is “good.” It’s whether the estimate gives you a reasonable starting point for your calorie and weight-management goals.

Is TDEE the number of calories I should eat?

TDEE is an estimate of how many calories you burn each day.

If your goal is to maintain your weight, your calorie intake may be close to your TDEE.

If your goal is weight loss, you would generally eat fewer calories than your estimated TDEE.

If your goal is weight gain, you would generally consume more.

Does TDEE change when you lose weight?

Yes.

As your body weight decreases, your BMR and overall energy requirements can decrease as well. Your activity level may also change.

This means the calorie deficit that worked at the beginning of your weight-loss journey may become smaller as you lose weight.

Can I use TDEE to lose weight?

Yes.

TDEE can give you an estimate of your maintenance calories. You can then create a calorie deficit by eating fewer calories than your estimated TDEE.

The goal isn’t to eat as little as possible. The goal is to create a sustainable deficit that supports gradual weight loss.

Should I recalculate my TDEE as I lose weight?

It’s a good idea to periodically recalculate your estimated TDEE as your weight, activity level, or exercise routine changes.

You don’t need to recalculate it every day.

A change in body weight over several weeks is more meaningful than normal day-to-day fluctuations.

Does running increase TDEE?

Yes. Running uses energy and contributes to your total daily energy expenditure.

However, the number of calories burned during a run is only one component of your total daily energy expenditure.

Does eating more increase TDEE?

Eating more food can increase the thermic effect of food because your body uses energy to digest and process what you eat.

However, this doesn’t mean that eating more calories will automatically increase your total calorie expenditure enough to prevent weight gain.

Your overall energy balance still matters.

How to Use Your TDEE for Your Weight-Loss Journey

Your TDEE is most useful when you treat it as a starting point rather than a perfect number.

Here’s a simple approach:

Step 1: Calculate your TDEE

Use the calculator above to estimate your daily calorie expenditure.

Step 2: Establish a reasonable calorie target

If weight loss is your goal, start with a moderate calorie deficit rather than immediately choosing the most aggressive possible restriction.

Step 3: Track your progress

Monitor your food intake and your weight trend.

You don’t need to obsess over individual daily fluctuations.

Step 4: Give it time

Allow several weeks before deciding whether your calorie target is working.

Step 5: Adjust when necessary

If your weight trend isn’t moving in the direction you want, your actual calorie needs may differ from the calculator estimate.

You can make a small adjustment to your calorie intake or activity level.

Remember: the calculator gives you a starting point. Your real-world results help you refine it.

Bottom Line

Your BMR is the energy your body uses at rest. Your TDEE is the energy your body uses throughout the entire day.

BMR is one of the building blocks used to estimate TDEE, along with physical activity, everyday movement, and the energy required to digest food.

If your goal is to understand how many calories you need to eat, TDEE is generally the more useful number.

Use the calculator above to estimate your TDEE, choose a realistic calorie target based on your goal, and then use your actual weight trend and activity level to fine-tune your approach.

There is no perfect calorie number.

The goal is to find a sustainable range that helps you make progress while still giving you enough energy to live, exercise, recover, and enjoy the process.

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