BMR Calculator

Calculate your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor formula. Add body fat % for Katch-McArdle accuracy. Get your TDEE for 5 activity levels.

Add your body fat % to get a more accurate Katch-McArdle BMR estimate based on lean body mass.

Free BMR Calculator - Basal Metabolic Rate | Mifflin-St Jeor & Katch-McArdle