Use this TDEE calculator to estimate daily calories for weight maintenance, weight loss, or muscle gain based on your age, height, weight, sex, and activity level.
TDEE Calculator
Estimate your daily calorie needs for maintenance, weight loss, or muscle gain based on your body measurements and activity level.
Your Estimated Daily Calories
Use these results as a starting point for your fitness goal.
These results are estimates rather than medical or dietary prescriptions. Your actual calorie needs may vary based on body composition, exercise, daily movement, health, and other factors.
What Is TDEE?
TDEE stands for Total Daily Energy Expenditure. It is an estimate of how many calories your body uses throughout an average day, including the energy required to keep your body functioning, move around, exercise, and perform normal daily activities.
Your TDEE can be useful when you want to understand how many calories you may need to maintain your current weight. It can also provide a starting point for planning a calorie deficit for weight loss or a calorie surplus for muscle gain.
This TDEE calculator estimates your daily calorie needs using your age, sex, height, weight, and activity level.
How Does the TDEE Calculator Work?
The calculation begins by estimating your resting calorie requirement, commonly referred to as BMR (Basal Metabolic Rate). This represents the approximate amount of energy your body needs at rest.
Your estimated resting calorie requirement is then multiplied by an activity factor based on your typical level of physical activity.
The basic process is:
BMR × Activity Factor = Estimated TDEE
Because activity levels differ from person to person, choosing the activity option that best represents your normal routine is important.
Activity Levels Explained
Your selected activity level can have a significant effect on your estimated daily calorie requirement.
Sedentary
This level is intended for people who do little or no structured exercise and spend most of the day sitting or performing light activities.
Activity factor: 1.2
Lightly Active
This option may be suitable if you exercise or participate in physical activity around one to three days per week.
Activity factor: 1.375
Moderately Active
This level generally suits people who exercise around three to five days per week.
Activity factor: 1.55
Very Active
Choose this level if you perform hard exercise most days of the week or have a highly active routine.
Activity factor: 1.725
Extremely Active
This option is intended for people with very demanding training schedules or physically demanding jobs combined with substantial exercise.
Activity factor: 1.9
If you are between two categories, choose the option that most closely matches your overall weekly activity rather than selecting a higher level simply because you exercise occasionally.
TDEE for Weight Maintenance
Your estimated TDEE can be used as a starting point for understanding your maintenance calories.
Maintenance calories are the approximate number of calories you need to consume to maintain your current body weight over time.
For example, if your estimated TDEE is 2,400 calories per day, eating around that amount may maintain your weight under similar activity conditions.
However, your actual maintenance level can be higher or lower. Daily movement, workout intensity, body composition, sleep, and other factors can affect energy expenditure.
The best approach is to use your calculated TDEE as a starting estimate and monitor your results over several weeks.
TDEE for Weight Loss
Weight loss generally requires a calorie deficit, meaning you consume fewer calories than your body uses over time.
For example, someone with an estimated TDEE of 2,400 calories might begin with a moderate reduction from that level rather than making a drastic change.
A commonly used starting point is a deficit of approximately 250–500 calories per day, depending on the individual and their goals.
For the example above:
- Estimated TDEE: 2,400 calories
- Moderate deficit: 250–500 calories
- Example target range: approximately 1,900–2,150 calories
Your actual calorie target should take your individual circumstances into account. A calculator provides an estimate rather than a personalized diet prescription.
TDEE for Muscle Gain
Building muscle generally requires adequate calories, protein, resistance training, and recovery.
Someone trying to gain muscle may use a modest calorie surplus above their estimated maintenance level.
For example, if your TDEE is approximately 2,400 calories, a starting intake around 2,550–2,700 calories could provide a modest surplus.
A smaller surplus can make it easier to monitor progress while limiting unnecessary increases in body fat.
Your training program and protein intake are also important. Simply increasing calories without appropriate resistance training does not guarantee that the additional energy will result in muscle growth.
TDEE vs BMR
TDEE and BMR are related, but they are not the same thing.
BMR estimates the energy your body requires at rest to support basic physiological functions.
TDEE goes further by accounting for your normal physical activity and daily energy expenditure.
In simple terms:
BMR = calories your body uses at rest
TDEE = estimated calories your body uses throughout the day
The TDEE calculation therefore uses an estimate of your resting calorie requirement as its starting point and adjusts it according to activity.
If you want to specifically calculate your resting calorie requirement, you can use a dedicated BMR Calculator.
How Many Calories Should I Eat?
There is no single calorie target that works for everyone.
Your estimated TDEE provides a useful starting point:
- Maintain weight: Eat around your estimated TDEE.
- Lose weight: Eat below your estimated TDEE.
- Gain muscle: Eat slightly above your estimated TDEE.
Your goal, current body composition, training routine, daily movement, and rate of progress can all affect the appropriate calorie intake.
Instead of changing your calories dramatically, it is often more useful to make a reasonable adjustment and monitor your weight and performance over time.
Why Can TDEE Change?
Your TDEE is not a permanent number.
It can change when your body weight changes, your activity level changes, or your daily routine becomes more or less physically demanding.
For example, increasing your weekly exercise or walking more during the day can increase your energy expenditure. Losing body weight may also reduce the number of calories your body needs to maintain that lower weight.
This is why your original TDEE estimate should be treated as a starting point rather than a fixed number.
How Accurate Is a TDEE Calculator?
A TDEE calculator provides an estimate, not a laboratory measurement.
The calculation uses information such as age, height, weight, sex, and activity level to estimate your calorie requirements. Your real energy expenditure can differ because people have different body compositions, movement patterns, exercise habits, and metabolic characteristics.
For better real-world accuracy, use the calculator result as a starting point and compare it with your actual weight trend and activity over several weeks.
If your weight consistently changes when you expected it to remain stable, your actual maintenance intake may differ from the original estimate.
Example TDEE Calculation
Imagine a person enters:
- Age: 30
- Sex: Male
- Weight: 70 kg
- Height: 175 cm
- Activity: Moderately Active
The calculator first estimates the person’s resting calorie requirement using the Mifflin-St Jeor equation:
BMR = (10 × 70) + (6.25 × 175) − (5 × 30) + 5
BMR = approximately 1,649 calories/day
The activity factor for a moderately active lifestyle is 1.55.
The estimated TDEE is then:
TDEE = 1,649 × 1.55
TDEE ≈ 2,556 calories/day
Therefore, this person’s estimated maintenance calorie requirement is approximately 2,556 calories per day.
As an example:
- Weight maintenance: ~2,556 calories/day
- Weight loss: ~2,056–2,306 calories/day
- Muscle gain: ~2,706–2,856 calories/day
These figures are starting estimates. Actual calorie needs can vary from person to person.
Tips for Using Your TDEE Result
Use your calculated number as a starting point rather than treating it as an exact daily requirement.
Keep these points in mind:
- Choose the activity level that realistically matches your normal routine.
- Avoid selecting a higher activity level simply to increase your estimated calorie needs.
- Monitor your weight trend rather than judging progress from a single day’s measurement.
- Consider changes in exercise, walking, and other daily movement.
- Recalculate your estimated TDEE if your weight or activity level changes significantly.
- Make gradual calorie adjustments instead of relying on extreme changes.
Consistency is usually more useful than trying to find a perfect calorie number on the first attempt.
Frequently Asked Questions
What does TDEE stand for?
TDEE stands for Total Daily Energy Expenditure. It is an estimate of the total number of calories your body uses during an average day.
Is TDEE the same as maintenance calories?
TDEE is commonly used as an estimate of maintenance calories because it represents your estimated daily energy expenditure. Consuming around your actual TDEE may help maintain body weight over time, although your real maintenance needs can vary.
Can TDEE change?
Yes. Your TDEE can change as your body weight, activity level, exercise routine, and daily movement change.
Should I eat below my TDEE to lose weight?
A calorie deficit is generally required for weight loss. Your TDEE can be used as a starting point for determining an appropriate calorie target below your estimated daily expenditure.
Can TDEE help with muscle gain?
Yes. Your estimated TDEE can help you establish a starting maintenance level. A modest calorie surplus combined with appropriate resistance training and sufficient protein can support muscle-building goals.
How often should I calculate my TDEE?
You do not necessarily need to calculate it every day. Recalculate when your body weight or activity level changes significantly, or when your current estimate no longer seems consistent with your real-world results.
Is the TDEE Calculator accurate?
The calculator provides an estimate based on commonly used equations and activity factors. Individual calorie requirements can differ, so your actual results should be monitored over time.
Final Takeaway
A TDEE estimate can help you understand your approximate daily calorie needs and create a starting point for your fitness goal.
Use your result as a guide:
Maintenance → around TDEE
Weight loss → below TDEE
Muscle gain → slightly above TDEE
Remember that TDEE is an estimate rather than an exact measurement. Your actual calorie requirements can change as your weight, activity, exercise, and lifestyle change.