Work out metabolic age instantly with clear inputs, formula shown and shareable results.
Solves the Mifflin-St Jeor equation for age, giving the age at which your body size would be predicted to have the measured basal metabolic rate.
Mifflin-St Jeor inverted
BMR = 10 x weight + 6.25 x height - 5 x age + 5 (men) or -161 (women); rearranged, age = (10 x weight + 6.25 x height + constant - BMR) / 5
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Mostly lean mass relative to body size; a higher muscle mass raises BMR and lowers the calculated age.
No. It is a rearrangement of a prediction equation, useful for motivation rather than diagnosis.