Health & Fitness
BMR Calculator
Estimate basal metabolic rate, the energy used at rest, with the Mifflin-St Jeor equation.
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Formula
Mifflin-St Jeor: men, 10×weight + 6.25×height − 5×age + 5; women, the same with −161 instead of +5.
How it works
Weight, height, age and sex are combined in the Mifflin-St Jeor equation. The result is what the body would use lying still all day, before any activity, digestion or exercise is added.
FAQs
Is BMR the same as daily calorie needs?
No. BMR is rest only; total needs add activity on top.
Why does age lower it?
The equation subtracts a little for each year of age.
Does muscle change it?
Yes in real life, but this equation uses weight only, so it is approximate.
General information only, not medical advice.