BMR Calculator (Basal Metabolic Rate)
Calculate your Basal Metabolic Rate — calories burned at rest.
About BMR Calculator
Your BMR is the number of calories your body needs to maintain basic life functions at complete rest (breathing, circulation, cell repair). Uses the Mifflin-St Jeor equation, the most accurate formula for most people. Also shows TDEE at different activity levels.
Use Cases
Understanding your calorie floor for weight loss, setting calorie targets for cutting or bulking, medical nutrition planning, fitness and diet tracking.
How It Works
Mifflin-St Jeor: Men: (10 × kg) + (6.25 × cm) − (5 × age) + 5. Women: (10 × kg) + (6.25 × cm) − (5 × age) − 161.
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR is calories burned at rest. TDEE (Total Daily Energy Expenditure) multiplies BMR by an activity factor to get your actual daily calorie needs.
Why Mifflin-St Jeor?
Research shows the Mifflin-St Jeor equation is the most accurate for predicting BMR in most individuals compared to older formulas like Harris-Benedict.