BMR (Basal Metabolic Rate) Calculator

Calculate your exact Basal Metabolic Rate (BMR) and Resting Daily Energy Expenditure (RDEE). Basal Metabolic Rate represents the minimum number of calories your body requires to perform basic life-sustaining functions—such as breathing, circulation, cellular repair, and brain activity—at complete rest. Compare the four primary clinical equations: the modern gold-standard Mifflin-St Jeor equation, the Revised Harris-Benedict formula (1984), the lean-mass-grounded Katch-McArdle formula, and the WHO/Schofield equation, complete with multi-level activity multipliers.