BMR (Basal Metabolic Rate) is the minimum energy your body needs at complete rest to sustain vital functions — breathing, heartbeat, temperature regulation.
TDEE (Total Daily Energy Expenditure) = BMR × Activity Multiplier, representing your total daily calorie burn.
Mifflin-St Jeor Equation is the most accurate BMR estimation, recommended by the Academy of Nutrition and Dietetics:
Male: BMR = 10×weight(kg) + 6.25×height(cm) - 5×age + 5
Female: BMR = 10×weight(kg) + 6.25×height(cm) - 5×age - 161