Calculate your total daily energy expenditure
Enter your details and click Calculate TDEE to see your daily energy expenditure
Learn the science behind total daily energy expenditure and how to use it for your fitness goals.
Total Daily Energy Expenditure is the total number of calories your body burns in a 24-hour period — including BMR, physical activity, digestion, and non-exercise movement.
BMR is your body's calorie needs at complete rest. TDEE adds your physical activity on top. For most people, TDEE is 1.3x–1.9x their BMR depending on lifestyle.
This calculator uses the Mifflin-St Jeor equation, widely considered the most accurate method for estimating BMR. It is recommended by the American Dietetic Association.
Eat below TDEE to lose fat. Eat at TDEE to maintain. Eat above TDEE to gain muscle. A 500-calorie daily deficit equals roughly 0.45 kg of fat loss per week.
Understanding your TDEE (Total Daily Energy Expenditure) is the cornerstone of any successful nutrition strategy — whether your goal is losing fat, maintaining weight, or building lean muscle mass. Unlike simple calorie counting that relies on generic recommendations, TDEE gives you a personalized daily calorie target based on your unique body composition, age, gender, and actual activity level. This comprehensive TDEE calculator uses the Mifflin-St Jeor equation, which research has consistently shown to be the most accurate predictive formula for estimating basal metabolic rate in healthy adults.
Your total daily energy expenditure is composed of several distinct components. The largest component, accounting for 60–75% of your daily burn, is your Basal Metabolic Rate (BMR) — the energy your body requires simply to stay alive while completely at rest. This includes breathing, circulating blood, maintaining body temperature, and cellular repair. The second component is the Thermic Effect of Food (TEF), which represents the calories burned during digestion (typically 10% of intake). The third component is physical activity, which can range from 15–30% of total expenditure depending on your lifestyle. Finally, Non-Exercise Activity Thermogenesis (NEAT) — fidgeting, walking, standing, and other daily movements — can account for a surprising 100–800 calories per day.
The activity multiplier is a critical factor in your TDEE calculation. Choosing the right level ensures your calorie target is accurate. Sedentary (×1.2) applies to individuals with desk jobs who perform minimal exercise — perhaps a short walk or household chores. Lightly Active (×1.375) fits those who exercise 1–3 times per week at low intensity, such as yoga, walking, or light cycling. Moderately Active (×1.55) is appropriate for people who train 3–5 days with moderate intensity — typical gym-goers who combine cardio and resistance training. Very Active (×1.725) describes athletes or individuals who train hard 6–7 days per week. Super Active (×1.9) is reserved for people with physically demanding occupations (construction workers, professional athletes) who also train intensely.
The principle behind weight loss is straightforward: create a caloric deficit by consuming fewer calories than your TDEE. A moderate deficit of 500 calories per day will result in approximately 0.45 kg (1 pound) of weight loss per week, which is considered a safe and sustainable rate. Aggressive deficits of 750–1000 calories may accelerate fat loss initially but come with increased risk of muscle loss, metabolic adaptation, nutrient deficiencies, and eventual diet burnout. For most individuals, eating at 80–85% of TDEE provides an optimal balance between fat loss speed and long-term sustainability.
Building muscle requires a caloric surplus above your TDEE. A lean bulk typically involves eating 250–500 calories above maintenance, which supports muscle growth while minimizing unnecessary fat gain. Combined with progressive resistance training and adequate protein intake (1.6–2.2 grams per kilogram of body weight), this approach enables quality weight gain of approximately 0.25–0.5 kg per week for intermediate lifters. More aggressive surpluses can be appropriate for beginners or those recovering from extended deficits.
Once you know your TDEE, the next step is distributing those calories across the three macronutrients: protein, carbohydrates, and fats. A balanced starting point is the 30/40/30 split — 30% protein, 40% carbs, 30% fat. This provides sufficient protein for muscle maintenance and recovery, adequate carbohydrates for energy and training performance, and enough dietary fat for hormonal health and nutrient absorption. However, these ratios should be adjusted based on individual preferences, training style, and specific goals.
One of the most frequent errors is overestimating activity level. Many people select "Very Active" when they should be choosing "Lightly Active" or "Moderately Active." Be honest about your actual exercise frequency and intensity. Another common mistake is failing to recalculate TDEE as your body changes — as you lose weight, your TDEE decreases, meaning the same calorie intake that initially created a deficit may eventually become maintenance. Finally, remember that TDEE is an estimate, not an exact number. Track your weight trends over 2–3 weeks and adjust intake by 100–200 calories if your weight isn't moving in the desired direction.
By understanding and utilizing your TDEE effectively, you gain the most powerful tool available for managing body composition. Whether you are using this TDEE calculator for the first time or recalculating after a training phase, remember that consistency in tracking and patience with results are what ultimately determine success. Pair this tool with our BMI Calculator for a comprehensive health assessment, or explore our Calorie Calculator for detailed meal planning guidance.
TDEE (Total Daily Energy Expenditure) is the total calories your body burns daily. It's calculated by first determining your BMR (Basal Metabolic Rate) using the Mifflin-St Jeor equation, then multiplying by an activity factor (1.2–1.9) based on your lifestyle.
BMR is the calories your body needs at complete rest — just to breathe, circulate blood, and maintain organs. TDEE is BMR plus all calories burned through daily movement, exercise, and digestion. TDEE is always higher than BMR.
To lose weight, eat fewer calories than your TDEE. A deficit of 500 calories per day leads to approximately 0.45 kg (1 lb) of weight loss per week. A moderate deficit of 250–500 calories is best for sustainable, healthy fat loss.
The Mifflin-St Jeor equation is considered the most accurate BMR formula, within approximately ±10%. However, individual factors like genetics, hormones, metabolic adaptation, and body composition can affect your actual TDEE. Track your weight for 2–3 weeks and adjust accordingly.
Recalculate every 4–6 weeks, or whenever you gain or lose more than 2–3 kg, change your exercise routine significantly, or notice your weight plateau despite consistent intake.
Yes! For a lean bulk, eat 250–500 calories above your TDEE daily. Pair with resistance training and 1.6–2.2g of protein per kg of body weight. This approach supports muscle growth while minimizing unnecessary fat gain.
