The BMR Calculator estimates your Basal Metabolic Rate — the number of calories your body needs at complete rest to maintain basic functions like breathing and circulation. It uses three established formulas: Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle.
Four modes let you calculate with each formula individually or compare all three side by side. Enter your age, gender, height, and weight to get your BMR estimate. Pairs well with our TDEE and Calorie calculators.
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