Basal Metabolic Rate estimator using Mifflin-St Jeor.
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A mathematical estimate based on validated equations, for education only. It is not a diagnostic tool.
BMR is the amount of energy expended while at rest in a neutrally temperate environment. It is the minimal energy needed to keep your body functioning.
The Mifflin-St Jeor formula we use was developed in 1990. It remains the clinical gold standard today because it was tested on much more diverse, modern populations than the 1919 Harris-Benedict equations.
Think of your BMR as your 'survival' needs. You should almost never eat below this number, as your body needs this energy just to keep your heart pumping and lungs breathing while at rest.
Mifflin MD, St Jeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO. A new predictive equation for resting energy expenditure in healthy individuals.
Academy of Nutrition and Dietetics. Estimating Energy Needs.
This tool is for education only and is not a diagnostic device. Consult a licensed clinician before making health decisions.