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CALORIES & NUTRITION · ADULTS

BMR Calculator

Estimate resting daily energy expenditure with the Mifflin–St Jeor equation and see the formula and limitations behind the number.

Method: Mifflin–St Jeor resting energy equationLast updated:
YOUR DETAILS

Your body at rest

Add your age and body measurements to estimate resting energy.

BMR inputs
Units

Your entries are calculated in your browser by this tool and are not intentionally stored or sent by the calculator code.

What BMR estimates

Basal metabolic rate (BMR) is measured under strict resting conditions. This commonly named BMR calculator uses Mifflin–St Jeor to predict resting energy expenditure (REE), which is related but is not a direct measurement of BMR. Real measured resting energy can differ from an equation because of body composition, health, temperature, medications and other factors.

Formula used

This tool uses the simplified Mifflin–St Jeor equation developed in healthy adults.

Male equation: 10 × weight (kg) + 6.25 × height (cm) − 5 × age + 5

Female equation: 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161

Important limitations

This is a prediction equation, not indirect calorimetry. It may be less appropriate in pregnancy, severe illness, unusual body composition or populations unlike the study sample.

References & sources

  1. Mifflin MD, St Jeor ST, et al. A new predictive equation for resting energy expenditure in healthy individuals. Am J Clin Nutr. 1990.

Sources checked and page updated on . This tool is for general educational use and is not a diagnosis or personal medical prescription.