TDEE Calculator

TDEE (Total Daily Energy Expenditure) is the total number of calories your body burns in a day, including your basal metabolic rate plus the energy used through physical activity, digestion (thermic effect of food), and non-exercise activity thermogenesis (NEAT). It represents the caloric intake at which you would maintain your current weight.

TDEE is calculated by multiplying your BMR (Basal Metabolic Rate) by an activity multiplier. Common multipliers range from 1.2 (sedentary, little or no exercise) to 1.9 (very active, hard daily exercise or a physical job). For example, if your BMR is 1,800 kcal and you exercise moderately 3-5 days per week, your TDEE would be approximately 1,800 × 1.55 = 2,790 kcal/day.

To lose weight, you need to consume fewer calories than your TDEE · creating a calorie deficit. A common recommendation is a deficit of 500 kcal/day, which theoretically produces about 0.5 kg (1 lb) of fat loss per week. Deficits larger than 1,000 kcal/day are generally not recommended as they can cause muscle loss, nutritional deficiencies, and metabolic adaptation.

BMR (Basal Metabolic Rate) is the number of calories your body burns at complete rest just to sustain basic functions like breathing, circulation, and cell production. TDEE is always higher than BMR because it adds the energy cost of physical activity, digestion, and all other movement throughout the day. Think of BMR as the engine idling and TDEE as the fuel used on a full day of driving.

TDEE calculators provide an estimate based on population averages and self-reported activity levels. Individual variability in metabolism, gut microbiome, hormones, and adaptive thermogenesis means actual TDEE can differ by 10-20% from the calculated figure. For best accuracy, track your weight and food intake for 2-4 weeks and adjust your calorie target based on observed results rather than relying solely on the calculator.