BMI Calculator
A quick screen from weight and height.
Private by design — everything is calculated on your device, nothing is storedTry: Weight=70, Height=170 → 70 kg, 170 cm, 24.2, Normal
How to use
Body Mass Index is weight divided by height squared. The WHO bands it into underweight, normal, overweight and obese. It is a population screen, not a body-composition measure.
Formula
BMI = weight(kg) / height(m)²
FAQ
Why does BMI miss muscle?
Heavy muscle raises BMI without extra fat, so athletes can read "overweight".
What are the WHO cut-offs?
Under 18.5, 18.5–24.9, 25–29.9, 30+.
Should I rely on BMI alone?
No — pair it with body-fat or waist measures.
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