TDEE is the total number of calories your body needs to maintain your current weight based on your activity level. Formula: T D E E = B M R × A c t i v i t y L e v e l TDEE=BMR×Activity Level Activity Level Multipliers: Sedentary (little or no exercise): 1.2 Lightly active (light exercise/sports 1–3 days/week): 1.375 Moderately active (moderate exercise/sports 3–5 days/week): 1.55 Very active (hard exercise/sports 6–7 days a week): 1.725 Extra active (very hard exercise/physical job): 1.9