TDEE Calculator — FAQ

TDEE stands for Total Daily Energy Expenditure — an estimate of the total number of calories your body uses in a typical day, including rest, digestion, and physical activity.

It first estimates your BMR (the calories you'd burn at complete rest) from your height, weight, age, and sex, then multiplies it by an activity factor based on how active you are to estimate your total daily expenditure.

BMR (Basal Metabolic Rate) is the energy your body uses at rest just to stay alive — breathing, circulation, cell repair, and so on. TDEE is your BMR plus the energy used for daily movement and activity, so TDEE is always higher than BMR.

You can choose between Mifflin-St Jeor and Harris-Benedict. Mifflin-St Jeor is widely regarded as one of the more accurate general estimates for most adults. Harris-Benedict is the older, historically common formula and tends to produce slightly higher values.

Each activity level maps to a multiplier applied to your BMR. Sedentary (1.2) covers desk work with little exercise; lightly active (1.375) applies to 1–3 exercise days per week; moderately active (1.55) to 3–5 days; very active (1.725) to 6–7 hard training days; and extra active (1.9) to very hard daily exercise or a physically demanding job.

Yes. You can enter your height and weight in metric (cm, kg) or imperial (ft/in, lb), and the result updates instantly.

It's a well-established estimate, not an exact measurement. Real energy expenditure varies with body composition, genetics, health, and day-to-day activity, so treat the number as a general guide rather than a precise target.

No. Your details are processed directly in your browser and are never stored or sent to a server, keeping your information completely private.

Yes, the calculator is fully responsive and works on smartphones, tablets, and desktops without any installation.

TDEE is an educational estimate, not personalised advice. For nutrition, weight, or training decisions — especially if you have any health conditions — consult a doctor or a qualified dietitian or fitness professional.