Estimate BMR (basal metabolism) and TDEE (daily calories) and get calorie targets for maintenance or fat loss. Runs locally in your browser. Share links store only inputs.
Age, sex, height, and weight are used to estimate BMR (resting calories).
TDEE = BMR × activity multiplier (from sedentary → super active)
Use maintenance or a deficit target (e.g., −500) as a starting point, then adjust.
BMR is calories your body burns at rest for vital functions.]
This page estimates BMR using Mifflin–St Jeor:
Men: 10×kg + 6.25×cm − 5×age + 5
Women: 10×kg + 6.25×cm − 5×age − 161]
TDEE is your daily total after activity adjustment. We use common multipliers (1.2–1.9)] These are estimates—real needs vary by body composition, routines, and measurement error.