BMR Calculator — Basal Metabolic Rate
Free BMR calculator using the Mifflin-St Jeor and Harris-Benedict formulas. Calculate your Basal Metabolic Rate in calories/day with metric or imperial units.
Your Basal Metabolic Rate (BMR) is the number of calories your body burns at complete rest. It's the foundation for calculating your daily calorie needs. We use the Mifflin-St Jeor equation — the gold standard recommended by most dietitians.
Formula (Mifflin-St Jeor): Men: (10 × kg) + (6.25 × cm) − (5 × age) + 5 / Women: (10 × kg) + (6.25 × cm) − (5 × age) − 161
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Once you know your calorie needs, balance your macros with our Protein Intake Calculator or ensure hydration with the Water Intake Calculator.