BMR-based estimate
The calculator uses the Mifflin-St Jeor equation to estimate basal metabolic rate, then applies a light BMI and activity adjustment to estimate metabolic age.
Health age
Metabolic Age Calculator
Estimate metabolic age from BMR, BMI, sex, height, weight, and activity.
Important note
This is a general fitness estimate. It is not a clinical metabolic test or a substitute for professional care.
Why results vary
Smart scales and clinical tools often use proprietary reference databases. This page provides a transparent approximation.
Browse Health Age Calculators
Health Age Calculators overview
Explore health-related age estimates for wellness context. These calculators are educational and not medical diagnoses.
View category hubRelated age calculators
Estimate metabolic age
Calculate BMR and a transparent metabolic age estimate.
Estimated metabolic age
39 years
1320 kcal/day
BMR
23.9
BMI