Your Basal Metabolic Rate (BMR) is the number of calories your body burns at complete rest just to keep you alive — breathing, circulation, cell repair. This calculator uses the Mifflin-St Jeor equation, widely regarded as the most accurate BMR formula for the general population.
BMR calculator
Frequently asked questions
How is BMR calculated?
This tool uses the Mifflin-St Jeor equation, the most widely validated formula for estimating Basal Metabolic Rate from weight, height, age, and sex. It estimates the calories your body burns at complete rest.