BMR is the calories your body needs at rest.

Which formula is most accurate?

Mifflin-St Jeor is widely considered the most accurate.

It is required for Katch-McArdle formula to estimate lean mass.

No, TDEE includes activity while BMR is at rest.

Yes, it changes with age, weight, and muscle mass.

Advanced BMR Calculator

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BMR (Basal Metabolic Rate) is the number of calories your body needs at rest to maintain vital functions.

This calculator supports multiple scientific formulas including Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle.