Total Daily Energy Expenditure — the exact calories you burn each day including all activity. The most important number for weight management.
TDEE = BMR × activity multiplier. Eat below this to lose, above to gain, at this level to maintain.
TDEE stands for Total Daily Energy Expenditure — the total number of calories you burn in a day, including your BMR plus all physical activity. It's the single most useful number for weight management.
To lose weight, eat 300–500 calories below your TDEE. To gain muscle, eat 250–300 above. To maintain, match your TDEE. Adjust every 2–3 weeks based on results, since TDEE changes as your weight changes.