TDEE Calculator

Nutrition Calculator

TDEE Calculator

Estimate your Total Daily Energy Expenditure based on your age, sex, height, weight, and activity level. Use your TDEE to plan fat loss, maintenance, or muscle gain.

BMR + Activity TDEE estimates how many calories your body burns in a full day, including movement and exercise.
Goal Planning Use your TDEE to set calorie targets for weight loss, maintenance, or weight gain.
Personalized Estimate Your result depends on body size, age, sex, activity level, and exercise habits.

Calculate Your TDEE

Enter your details below. The calculator estimates BMR using the Mifflin-St Jeor equation, then adjusts for activity level.

Enter age in years.
Use current body weight.
Enter height in centimeters.

Activity Level

Select the option that best describes your usual weekly activity.

Estimated TDEE 2200 kcal/day

This is your estimated daily calorie burn based on your BMR and activity level.

BMR 1500 kcal Estimated calories burned at rest
Activity 1.55 Moderately Active
Fat Loss 1700 kcal Approx. 500 kcal deficit
Mild Loss 1950 kcal Approx. 250 kcal deficit
Maintenance 2200 kcal Estimated stable weight target
Lean Gain 2450 kcal Approx. 250 kcal surplus
Fast Gain 2700 kcal Approx. 500 kcal surplus
Weekly Burn 15400 kcal Estimated 7-day expenditure
Use this as a starting estimate and adjust based on weight trends, hunger, energy, and performance.
Health note: This calculator provides an estimate only. Calorie needs vary based on metabolism, muscle mass, hormones, medical conditions, medications, pregnancy, breastfeeding, dieting history, and activity tracking accuracy. For medical weight management, diabetes, eating disorders, kidney disease, pregnancy, or chronic illness, consult a qualified healthcare professional.

TDEE Calculator: Total Daily Energy Expenditure, BMR, and Calorie Needs Explained

A TDEE Calculator helps estimate how many calories your body burns in a full day. TDEE stands for Total Daily Energy Expenditure. It includes the calories your body uses at rest, plus the calories burned through walking, exercise, daily movement, digestion, work, and general activity.

Knowing your TDEE can help you plan calories for:

⚖️ Weight maintenance
⬇️ Fat loss
⬆️ Weight gain
💪 Muscle building
🥗 Meal planning
🏃 Fitness nutrition
🩸 Metabolic health support

Your TDEE is an estimate, not a perfect number. Real calorie needs can vary based on metabolism, muscle mass, hormones, medical conditions, sleep, stress, medications, dieting history, and activity tracking accuracy.

🔥 What Is TDEE?

TDEE means Total Daily Energy Expenditure. It is the estimated number of calories your body burns in one day.

Your TDEE includes several parts:

🧠 Basal Metabolic Rate / Resting Energy Use — calories your body uses to keep you alive
🚶 Daily Movement — walking, standing, household work, and normal activity
🏋️ Exercise — planned workouts, sports, cardio, and strength training
🍽️ Thermic Effect of Food — calories used to digest and process food

In simple words:

TDEE = the total calories you burn in a day

Mayo Clinic explains that metabolism is the process by which the body changes food and drink into energy, and calories are used even at rest for functions such as breathing, circulation, hormone levels, and cell repair.

✅ Why TDEE Is Important

TDEE is useful because body weight is strongly influenced by the balance between calories eaten and calories burned.

If you regularly eat around your TDEE, your weight is likely to stay relatively stable.

If you regularly eat below your TDEE, you may lose weight.

If you regularly eat above your TDEE, you may gain weight.

Mayo Clinic explains that when you eat more calories than you burn, you gain weight, and when you eat fewer calories while burning more through activity, you lose weight. It also notes that the old 500-calorie-per-day rule does not produce the same result for everyone.

🧮 How This TDEE Calculator Works

This calculator estimates your TDEE in two steps:

Step 1: Estimate BMR

BMR stands for Basal Metabolic Rate. It is the estimated number of calories your body burns at rest.

This calculator uses the Mifflin-St Jeor equation, a widely used formula for estimating resting metabolic rate. Medscape describes the Mifflin-St Jeor equation as a tool used to determine resting metabolic rate, which is the number of calories burned while at rest.

Step 2: Multiply by Activity Level

After estimating BMR, the calculator multiplies it by an activity factor.

This gives your estimated:

TDEE = BMR × Activity Factor

🧠 BMR vs TDEE: What Is the Difference?

BMR

BMR is the energy your body uses at rest.

It supports basic body functions such as:

🫁 Breathing
🫀 Blood circulation
🧠 Brain function
🌡️ Body temperature control
🧬 Cell repair
🧪 Hormone production

TDEE

TDEE includes BMR plus all daily activity.

It includes:

🚶 Walking
🧹 Housework
🏋️ Exercise
💼 Work activity
🧍 Standing
🍽️ Digestion
🏃 Sports or training

In simple terms:

BMR = calories burned at rest
TDEE = calories burned in your whole day

📊 Activity Levels Used in TDEE Calculation

Activity level has a major effect on TDEE. Two people with the same age, height, weight, and sex can have different calorie needs if one is sedentary and the other is very active.

🪑 Sedentary — Factor 1.2

This applies to people who do little or no exercise and spend much of the day sitting.

Examples:

🪑 Desk job
🚗 Little walking
📺 Low daily movement
🏋️ No regular exercise

🚶 Lightly Active — Factor 1.375

This applies to people who do light exercise or activity around 1–3 days per week.

Examples:

🚶 Light walking
🧘 Light workouts
🏠 Some household activity
🏋️ Exercise 1–3 days weekly

🏃 Moderately Active — Factor 1.55

This applies to people who exercise around 3–5 days per week.

Examples:

🏋️ Regular gym routine
🚴 Cycling or jogging
⚽ Sports several days weekly
🚶 Active daily lifestyle

💪 Very Active — Factor 1.725

This applies to people who do hard exercise 6–7 days per week.

Examples:

🏋️ Intense training most days
🏃 Endurance exercise
💼 Physically active job
⚽ Competitive sports

🔥 Extra Active — Factor 1.9

This applies to athletes, highly active workers, or people doing hard training plus a physical job.

Examples:

🏗️ Heavy manual labor
🏋️ Two-a-day training
🏃 High-volume endurance training
⚽ Athlete-level activity

The CDC explains that physical activity increases the number of calories the body uses for energy, and that combining activity with calorie reduction can create a calorie deficit for weight loss.

🧾 TDEE Example Calculation

Let’s say a person has:

👤 Sex: Male
🎂 Age: 30 years
⚖️ Weight: 70 kg
📏 Height: 170 cm
🏃 Activity: Moderately active

Using the Mifflin-St Jeor equation:

BMR = 10 × weight + 6.25 × height − 5 × age + 5

BMR = 10 × 70 + 6.25 × 170 − 5 × 30 + 5

BMR = 700 + 1062.5 − 150 + 5

BMR = 1617.5 calories/day

Moderately active factor:

1.55

Estimated TDEE:

1617.5 × 1.55 = 2507 calories/day

So this person’s estimated maintenance calories are approximately:

2500 calories/day

⚖️ How to Use TDEE for Weight Maintenance

If your goal is to maintain your current weight, your TDEE gives an estimated maintenance calorie target.

For example:

If your TDEE is 2200 calories/day, eating close to 2200 calories per day may help maintain your current weight.

However, maintenance is not exact. Your body weight can change from water retention, sodium intake, menstrual cycle, digestion, muscle gain, exercise inflammation, stress, and sleep.

A practical method is to track your average weight over 2–4 weeks and adjust calories if your weight is steadily going up or down.

⬇️ How to Use TDEE for Fat Loss

For fat loss, you generally need a calorie deficit. That means eating fewer calories than your body burns.

Common starting points:

🟢 Mild deficit: TDEE − 250 calories/day
🟡 Moderate deficit: TDEE − 500 calories/day

Example

If your TDEE is 2200 calories/day:

Mild fat loss target:

2200 − 250 = 1950 calories/day

Moderate fat loss target:

2200 − 500 = 1700 calories/day

A smaller deficit may be easier to maintain and may reduce hunger, fatigue, and muscle loss risk. A larger deficit may produce faster results but can be harder to sustain.

CDC notes that most weight loss occurs from decreasing calories, while regular physical activity is especially important for maintaining weight loss.

💪 How to Use TDEE for Muscle Gain

For muscle gain, you generally need enough calories, enough protein, and progressive resistance training.

Common starting points:

🟢 Lean gain: TDEE + 250 calories/day
🟡 Faster gain: TDEE + 500 calories/day

Example

If your TDEE is 2500 calories/day:

Lean gain target:

2500 + 250 = 2750 calories/day

Faster gain target:

2500 + 500 = 3000 calories/day

A smaller surplus is often better for lean muscle gain because it may reduce unnecessary fat gain. A larger surplus may be useful for some very active people, hard gainers, or athletes, but it should be monitored.

🥗 TDEE and Meal Planning

Once you know your TDEE, you can build a meal plan around it.

For example, if your maintenance target is 2000 calories/day, you may divide it like this:

🌅 Breakfast: 500 calories
☀️ Lunch: 700 calories
🌙 Dinner: 600 calories
🍎 Snacks: 200 calories

TDEE gives the daily target, while meal planning helps you spread calories across the day in a realistic way.

The Academy of Nutrition and Dietetics provides guidance on meal planning and nutritious food choices, emphasizing practical planning for eating well at home and away.

🧬 Factors That Affect Your TDEE

TDEE is influenced by many factors.

⚖️ Body Weight

Heavier bodies usually burn more calories because more energy is needed to move and maintain body tissue.

💪 Muscle Mass

Muscle tissue is metabolically active. People with more lean mass may burn more calories at rest and during activity.

🎂 Age

Metabolic rate often decreases with age, partly due to changes in muscle mass, hormones, and activity level.

👤 Sex

On average, men often have higher BMR than women because of differences in body size and lean mass, but individual variation is large.

🏃 Activity Level

Activity level can significantly change TDEE. Daily steps, exercise, physical work, and non-exercise movement all matter.

😴 Sleep

Poor sleep can affect hunger, energy, activity, appetite regulation, and food choices.

🧠 Stress

Stress may affect appetite, cravings, sleep, and activity habits.

💊 Medications and Medical Conditions

Thyroid disease, diabetes, PCOS, menopause, steroids, antidepressants, and other conditions or medications may affect weight and energy needs.

📉 Why Your TDEE May Change During Weight Loss

TDEE is not fixed. It can decrease during weight loss because:

⚖️ A smaller body burns fewer calories
🍽️ Dieting may reduce spontaneous movement
🏋️ Training performance may drop if calories are too low
🧠 Hunger may increase
💤 Fatigue may reduce daily activity
🧬 Metabolic adaptation may occur

This is why a calorie target that works at the beginning of weight loss may need adjustment later.

If progress stalls for several weeks, you may need to review:

📊 Average calorie intake
🚶 Daily steps
🏋️ Exercise consistency
😴 Sleep
🥗 Weekend eating
🥤 Liquid calories
⚖️ Weight trend, not single weigh-ins

🧍 NEAT: The Hidden Part of TDEE

NEAT means Non-Exercise Activity Thermogenesis. It includes calories burned from normal daily movement that is not formal exercise.

Examples:

🚶 Walking around the house
🧹 Cleaning
🧍 Standing
🛒 Shopping
🪜 Taking stairs
👋 Fidgeting
💼 Moving at work

NEAT can make a big difference in TDEE. Two people may both exercise for one hour, but the person who walks more, stands more, and moves more during the rest of the day may burn many more calories overall.

🏋️ Exercise and TDEE

Exercise helps increase energy expenditure, supports heart health, improves insulin sensitivity, preserves muscle mass, and supports mental health.

The CDC recommends that adults get at least 150 minutes of moderate-intensity aerobic physical activity per week, or 75 minutes of vigorous-intensity activity, plus muscle-strengthening activities at least 2 days per week.

Exercise is helpful, but it is easy to overestimate calories burned during workouts. For weight management, combine exercise with realistic food intake, protein, sleep, and daily movement.

🍗 Protein, Fiber, and Food Quality Matter

TDEE tells you how many calories you may need, but food quality affects hunger, health, blood sugar, digestion, and muscle retention.

A good calorie plan should include:

🍗 Protein at each meal
🥦 Vegetables
🍎 Fruits
🌾 Whole grains or quality carbohydrates
🥑 Healthy fats
🫘 Beans, lentils, nuts, and seeds
💧 Water or low-calorie drinks

For fat loss, protein and fiber can help improve fullness. For muscle gain, protein and resistance training are especially important.

⚠️ Common Mistakes When Using TDEE

Mistake 1: Choosing the Wrong Activity Level

Many people overestimate activity level. If you have a desk job and exercise 2–3 times per week, you may still be closer to lightly active than very active.

Mistake 2: Expecting Perfect Accuracy

TDEE calculators estimate. They are not laboratory measurements.

Mistake 3: Ignoring Weight Trends

Use your weekly weight average to see whether your calorie target is working.

Mistake 4: Eating Back All Exercise Calories

Fitness watches and machines often overestimate calorie burn. Be careful about adding too many calories back after workouts.

Mistake 5: Cutting Calories Too Low

Very low calories may increase hunger, fatigue, nutrient gaps, binge risk, and muscle loss.

Mistake 6: Not Adjusting Over Time

As weight, activity, and lifestyle change, TDEE changes too.

📊 How to Check If Your TDEE Estimate Is Correct

Use your TDEE as a starting point, then observe your body’s response.

If your goal is maintenance:

If your average weight stays stable for 2–4 weeks, your target is likely close.

If your goal is fat loss:

If weight is not decreasing after several weeks, your true TDEE may be lower than estimated, or calorie intake may be higher than tracked.

If your goal is muscle gain:

If weight is not increasing after several weeks, you may need a small calorie increase.

Use average trends instead of daily scale changes. Daily weight can fluctuate from water, salt, hormones, bowel movements, glycogen, and exercise.

🧠 TDEE and Metabolism Myths

Myth 1: “A slow metabolism means weight loss is impossible.”

Metabolism varies, but weight management is still influenced by calorie intake, activity, sleep, stress, and consistency.

Myth 2: “Exercise alone is enough for weight loss.”

Exercise helps, but food intake usually has a large effect on weight loss. CDC notes that most weight loss occurs from decreasing calories, while activity is critical for maintaining weight loss.

Myth 3: “Eating at night automatically causes fat gain.”

Fat gain depends more on total calorie balance over time than meal timing alone. However, late-night snacking can make it easier to exceed calorie needs.

Myth 4: “The calculator number must be exact.”

TDEE is an estimate. Your real maintenance calories are found by tracking results over time.

✅ How to Use This TDEE Calculator

To use this calculator:

  1. Enter your age.
  2. Select sex.
  3. Enter weight in kilograms.
  4. Enter height in centimeters.
  5. Select your activity level.
  6. Review your estimated BMR and TDEE.
  7. Choose a calorie target based on your goal.
  8. Track your progress for 2–4 weeks and adjust if needed.

Use the result as a starting point, not a permanent rule.

📌 Key Takeaway

A TDEE Calculator estimates how many calories your body burns in a full day. It combines your resting calorie burn with your activity level. Your TDEE can help you set calorie targets for fat loss, weight maintenance, or muscle gain.

For best results, use your TDEE as a starting estimate, then adjust based on your real progress, hunger, energy, training performance, sleep, and health status. Calories matter, but food quality, protein, fiber, activity, sleep, and consistency also play a major role.

⚕️ Medical Disclaimer

This TDEE Calculator and article are for educational and informational purposes only. They do not replace medical advice, diagnosis, treatment, or individualized nutrition guidance. Calorie needs vary based on age, sex, body composition, activity level, hormones, medical conditions, medications, pregnancy, breastfeeding, eating disorder history, and metabolic health. Consult a qualified healthcare professional for personalized advice, especially if you have diabetes, kidney disease, thyroid disease, heart disease, pregnancy, an eating disorder, or chronic illness.