Health & Fitness

What Is BMR?

Basal metabolic rate (BMR) is the number of calories the body uses at complete rest to maintain basic functions such as breathing, circulation, and cell repair. It is usually estimated with equations based on weight, height, age, and sex, such as the Mifflin–St Jeor equation.

BMR vs. TDEE

Total daily energy expenditure (TDEE) adds the calories used for daily activity and exercise on top of BMR, commonly estimated by multiplying BMR by an activity factor.

Mifflin–St Jeor Equation

BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) + 5 for men, or − 161 for women.

🧮 Calculate It Yourself

Put Basal Metabolic Rate (BMR) into practice with these free calculators — no sign-up, nothing stored.

🔥 Calorie Calculator (TDEE) Find your daily calorie needs using the Mifflin-St Jeor formula. Calculate → 🥚 Protein Intake Calculator Daily protein needs in grams for your weight and goal. Calculate → ⚖️ BMI Calculator Calculate your Body Mass Index in metric or imperial units. Calculate →

🔗 Related Terms

Body Mass Index (BMI) Body Fat Percentage Ideal Body Weight

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Last updated: September 27, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.