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About This Calculator
Total Daily Energy Expenditure combines your basal metabolic rate with the calories burned through daily activities and exercise. This calculator multiplies your BMR by an activity factor that reflects your lifestyle, from sedentary desk work to intense athletic training. TDEE is the most accurate baseline for meal planning because it accounts for your actual daily movement, not just resting metabolism.
Quick Tips
- 1 Recalculate TDEE monthly as your activity level or weight changes.
- 2 A 500-calorie daily deficit below TDEE loses roughly 1 pound per week.
- 3 Most people overestimate activity level — start one category lower.
Example Calculation
A 25-year-old male, 175 lbs, 5'11", exercises heavily 5-6 days/week.
BMR: 1,838 cal | TDEE: 3,168 cal (1.725x) | To cut: 2,668 cal | To bulk: 3,668 cal
What is TDEE?
Total Daily Energy Expenditure (TDEE) represents the total number of calories you burn in a day. It combines your Basal Metabolic Rate (BMR) with calories burned through physical activity, the thermic effect of food, and non-exercise activity thermogenesis (NEAT). TDEE is the most important number for managing your weight.
How TDEE is Calculated
TDEE is calculated by first determining your BMR using the Mifflin-St Jeor equation, then multiplying by an activity factor ranging from 1.2 (sedentary) to 1.9 (extremely active). This activity multiplier accounts for exercise, daily movement, and the energy cost of digesting food.
Using TDEE for Weight Management
To maintain your current weight, eat at your TDEE. For weight loss, eat 10-25% below your TDEE. For muscle gain, eat 10-20% above your TDEE. These moderate adjustments are more sustainable and preserve muscle mass better than extreme calorie cuts or surpluses.
Why TDEE Changes Over Time
Your TDEE fluctuates with changes in weight, muscle mass, age, and activity level. As you lose weight, your TDEE decreases because your body has less mass to sustain. This is why weight loss often plateaus — your calorie needs have decreased to match your new, smaller body. Recalculate regularly.
Frequently Asked Questions
Be honest and conservative. Most people overestimate their activity level. If you exercise 3-4 times per week but have a desk job, choose Moderate. If you have a physically demanding job and also exercise, choose Very Active. When in doubt, select one level lower and adjust based on results.
If you selected an activity level that includes your exercise, your TDEE already accounts for those burned calories. Eating back exercise calories on top of your TDEE would create a surplus. Only eat back exercise calories if you used the Sedentary multiplier and want to account for workouts separately.
Recalculate every time you lose or gain 10 or more pounds, change your exercise routine significantly, or every 4-6 weeks during an active diet phase. Your calorie needs shift as your body composition changes.
BMR is the calories you burn at complete rest — just to keep your organs functioning. TDEE adds physical activity and food digestion energy costs on top of BMR. For most people, TDEE is 1.3 to 2 times higher than BMR depending on activity level.