BMR Calculator
Estimate your basal metabolic rate: the calories your body uses at rest for essential functions.
Hit Calculate to see your BMR zone
Calculate to compare equations
Metrics appear after calculation
Your explanation appears here
BMR excludes movement, exercise and digestion. Use a calorie or TDEE calculator when planning daily intake.
Your plan appears after calculation
Preview how BMR changes if body weight or body fat changes while keeping age and height fixed.
Calculate your baseline first
Basal metabolic rate is an estimate of the calories your body uses at rest to support vital functions such as breathing, circulation, temperature regulation and cell activity.
Mifflin-St Jeor is a common default for adults. Harris-Benedict is a classic comparison formula. Katch-McArdle can be useful when you have a reliable body fat estimate because it uses lean body mass.
BMR is usually lower than your full daily energy expenditure because it excludes normal movement, exercise and digestion. Eating at or below BMR may be inappropriate for many people; use professional guidance for medical or dietary decisions.
Results are estimates generated locally in your browser using standard BMR equations. They are for informational purposes only, not medical, nutrition or weight-management advice. Equations may be less accurate for children, pregnancy, athletes, older adults, very high or low body composition, and clinical conditions. VisionVix accepts no liability for decisions based on this output.
