Work out bmr (mifflin st jeor) instantly with clear inputs, formula shown and shareable results.
Applies the Mifflin-St Jeor equation, the predictive formula that performs best against measured resting energy expenditure in most adults.
Mifflin-St Jeor
BMR = 10 x weight (kg) + 6.25 x height (cm) - 5 x age + 5 for men or - 161 for women
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
It was derived from a more modern population and predicts measured resting energy expenditure with less bias.
Within about 10% for most people, but individual variation of 200 to 300 kcal a day is common.