What's the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is the calories your body burns at complete rest — just to keep organs functioning. TDEE (Total Daily Energy Expenditure) is BMR multiplied by your activity factor. TDEE is what you should base your calorie intake on.

Which BMR formula is best?

Mifflin-St Jeor is the most accurate for most people and is recommended by the Academy of Nutrition and Dietetics. Harris-Benedict tends to overestimate slightly. Katch-McArdle is best if you know your body fat percentage, as it accounts for lean mass.

Can I increase my BMR?

Yes. Building muscle is the most effective way — muscle tissue burns more calories at rest than fat. Regular exercise, adequate sleep, and avoiding crash diets also help maintain a healthy metabolic rate.

🫀 BMR Calculator

How many calories you burn at rest

Age

Weight (kg)

Height (cm)

Body Fat % (optional, for Katch-McArdle)

How it works

Calculate your Basal Metabolic Rate (BMR) — the number of calories your body burns at rest. Compare results from three formulas: Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle. Understanding your BMR is the first step to calculating your total daily calorie needs.

Disclaimer: This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.

Frequently Asked Questions

What's the difference between BMR and TDEE?: BMR (Basal Metabolic Rate) is the calories your body burns at complete rest — just to keep organs functioning. TDEE (Total Daily Energy Expenditure) is BMR multiplied by your activity factor. TDEE is what you should base your calorie intake on.
Which BMR formula is best?: Mifflin-St Jeor is the most accurate for most people and is recommended by the Academy of Nutrition and Dietetics. Harris-Benedict tends to overestimate slightly. Katch-McArdle is best if you know your body fat percentage, as it accounts for lean mass.
Can I increase my BMR?: Yes. Building muscle is the most effective way — muscle tissue burns more calories at rest than fat. Regular exercise, adequate sleep, and avoiding crash diets also help maintain a healthy metabolic rate.

Related Calculators

🔥 Calorie Calculator (TDEE)

Find your daily calorie needs for any goal

🔬 Metabolic Age Calculator

Is your metabolism younger or older than you?

📉 Calorie Deficit Calculator

How many calories to eat to lose weight