Free Online Calculators

BMR Calculator

Estimate your Basal Metabolic Rate (BMR) with two published equations. An estimate, not a measurement.

Calculator
🔥 Estimated BMR
—
Calories/day at complete rest
Mifflin-St Jeor—
Harris-Benedict (revised)—

What is BMR?

Basal Metabolic Rate is the number of calories your body needs to maintain basic physiological functions (breathing, circulation, cell production) while at complete rest. The Mifflin-St Jeor equation (Mifflin et al., Am J Clin Nutr 1990) and the revised Harris-Benedict equation estimate it from weight, height, age and sex. They were built from adult samples, so measured values can differ by hundreds of kcal. This is an estimate, not a personal target or medical advice.

Press / to open  ·  Esc to close