What Is TDEE?
Total daily energy expenditure (TDEE) is the estimated number of calories the body uses in a day, including basal metabolism, physical activity, and digestion. It is commonly estimated by multiplying basal metabolic rate (BMR) by an activity factor, from about 1.2 for sedentary people to about 1.9 for very active people.
Formula
TDEE ≈ BMR × activity factor. A BMR of 1,600 with a moderately active factor of 1.55 gives about 2,480 calories.
Accuracy
TDEE formulas are estimates; actual needs vary between individuals.
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🔗 Related Terms
More Health & Fitness Terms
- Body Composition
- Body Fat Percentage
- Body Mass Index (BMI)
- Calorie
- Circadian Rhythm
- Estimated Due Date (EDD)
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Last updated: September 27, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.