BMI Calculator
Check your Body Mass Index in seconds — with both South Asian and standard WHO cutoffs, so the result actually fits your body.
Enter your measurements
For adults 18+. BMI is a screening aid, not a diagnosis — it doesn't distinguish muscle from fat. Athletes, pregnant women, and the elderly should interpret it with their doctor.
Frequently Asked Questions
Quick answers about the BMI Calculator — a free MFZ Clinical Lab tool.
1 What is BMI? +
BMI (Body Mass Index) is a screening number calculated from your height and weight (kg/m²). It gives a general indication of whether an adult is underweight, in the healthy range, overweight, or obese.
2 How does this BMI calculator work? +
Enter your height and weight — in metric (cm & kg) or imperial (ft/in & lb) — and the calculator instantly shows your BMI with both South Asian and standard WHO cutoffs, so the result actually fits your body type.
3 Why are there South Asian cutoffs? +
Research shows South Asian adults face weight-related health risks at lower BMI values than the standard WHO ranges, so South Asian cutoffs class overweight and obesity earlier. This calculator shows both so you can compare.
4 Is my data stored or shared? +
No. The calculator is private — it runs entirely in your browser and nothing is uploaded or stored. There is no signup.
5 Is BMI a diagnosis? +
No. BMI is a screening aid, not a diagnosis — it does not distinguish muscle from fat. Athletes, pregnant women and the elderly should interpret their result with their doctor. This is an educational tool for adults 18+.