What is TDEE?
Total daily energy expenditure is the energy used across an average day. It varies with movement, training, body composition, sleep, health, and food intake, so a calculator provides a starting estimate.
TDEE Calculator
Estimate your basal metabolic rate and total daily energy expenditure from your age, body measurements, BMR formula, and activity level. Results are population-based estimates and not medical advice.
How TDEE Is Calculated
TDEE is an estimate of the energy your body uses each day, including rest and activity. It starts with basal metabolic rate (BMR), then applies an activity multiplier to reflect typical movement and exercise.
Illustrative breakdown: resting energy plus activity and other daily expenditure.
Basal metabolic rate
BMR is the estimated energy needed at rest to support essential body functions. This calculator offers Mifflin-St Jeor and Katch-McArdle options where body-fat data is available.
Activity level
The activity factor accounts for exercise and everyday movement, from sedentary through extremely active. Choose the level that best represents your usual week rather than a single unusually active day.
Thermic effect of food
Digesting and processing food also uses energy. Its contribution varies by intake and macronutrient mix and is represented only indirectly in this simplified estimate.
How the estimate works
First, the selected equation estimates BMR from your inputs. Then TDEE is calculated as BMR × activity multiplier. Compare the result with real-world trends and adjust carefully when appropriate.