BMR Calculator

Estimate the calories your body burns at complete rest

BMR Calculator

Basal Metabolic Rate (BMR) is the number of calories your body needs to keep functioning at rest. It is the foundation of your daily calorie target — multiply BMR by an activity factor to get TDEE. Mifflin-St Jeor is the most accurate for most people; Katch-McArdle is best if you know your body-fat percentage.

Frequently Asked Questions

What is the difference between BMR and TDEE?
BMR is the calories your body burns at complete rest. TDEE is BMR plus the calories burned through daily activity and exercise.
Which BMR formula is most accurate?
Mifflin-St Jeor is the most accurate for the general population. Katch-McArdle is better if you know your body-fat percentage.
Can I increase my BMR?
Building muscle through strength training raises BMR slightly because muscle is more metabolically active than fat. Crash diets lower it.

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