BMR Calculator
Calculate basal metabolic rate using multiple formulas.
3 formulas
Metric + imperial
Instant BMR
BMR basics
BMR estimates how many calories your body uses at rest. It is the foundation for TDEE and calorie planning.
Assumptions
Equations are based on adult populations and assume stable body weight. Katch-McArdle requires accurate body-fat input.
Choose the right formula
Mifflin-St Jeor is widely used for general populations, Harris-Benedict here uses the revised equation, and Katch-McArdle uses body-fat input.