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BMR Calculator

Calculate your Basal Metabolic Rate — the calories your body burns at complete rest — using three recognized formulas.

Your details
Your results
1659 kcal
Mifflin-St Jeor
1707 kcal
Harris-Benedict
6940 kJ
kJ equivalent
—
Katch-McArdle
What is BMR?

Your BMR is the energy your body needs to maintain basic physiological functions at rest — breathing, circulation, cell production. It accounts for roughly 60–75% of your daily calorie burn. Multiply by an activity factor to get your TDEE.

All formulas, compared
Mifflin-St Jeor is the most widely recommended today.

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