BMR calculator — basal metabolic rate

Enter sex, age, weight and height to get your BMR with Mifflin-St Jeor and Harris-Benedict (and Katch-McArdle with body fat %).

Year
kg
cm
%

Fill in the form — the result appears here instantly

ℹ️ Results are estimates for planning. Real figures can differ with your situation and your bank or employer.

How it works: BMR calculator

BMR is the energy your body needs to breathe, pump blood and stay warm if you rested all day. Mifflin-St Jeor is the most accurate for most people; Harris-Benedict is the classic formula; with your body-fat percentage, Katch-McArdle works from lean mass and suits active people.

Calories by activity level (TDEE) are shown below. Don't eat below your BMR for long without advice from a doctor or dietitian.

FAQ

BMR vs TDEE?

BMR is energy at rest; TDEE adds the energy of your daily activity.

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