Basal metabolic rate (BMR) is the energy your body uses at rest for breathing, circulation, and basic cell function. The estimate below uses the Mifflin-St Jeor equation—a common formula used in nutrition planning. Pair it with activity level in our Calorie Calculator for daily needs.
For adults 18 and older. BMR formulas estimate resting energy needs and vary by individual. Not medical advice. Consult a qualified professional for personalized nutrition guidance.
Related tools & guides
- Calorie Calculator — BMR plus activity for daily needs
- Macro Calculator — protein, carbs, and fat targets
- BMI Calculator — weight-for-height screening
- What Is BMR? — how resting metabolism works
- Understanding Your Maintenance Calories
- All tools
Planning fat loss? See How to Create a Calorie Deficit and How Many Calories Do You Need Per Day?