Calorie Calculator
Estimate your daily calorie needs to maintain, lose, or gain weight.
How daily calorie needs are estimated
This calculator estimates your Basal Metabolic Rate (BMR) — the energy your body needs at complete rest — using the Mifflin-St Jeor equation, then multiplies it by an activity factor to estimate your Total Daily Energy Expenditure (TDEE), the calories you'd burn in an average day including activity. A deficit of roughly 500 kcal/day corresponds to about 0.5 kg (1 lb) of fat loss per week, and a similar surplus supports gradual weight gain.