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About This Tool
The TDEE (Total Daily Energy Expenditure) Calculator estimates the total number of calories you burn each day. It combines your BMR (Basal Metabolic Rate) calculated via the Mifflin-St Jeor equation with your activity level multiplier.
TDEE is composed of three main components: BMR (60-75% of total), the thermic effect of food (about 10%), and physical activity (15-30%). Understanding your TDEE is the key to effective weight management — eat below TDEE to lose weight, at TDEE to maintain, or above to gain.
The calculator provides a detailed breakdown showing your BMR, the thermic effect of food, estimated exercise calories, and your total TDEE. It also shows adjusted targets for weight loss and weight gain scenarios.