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BMI Calculator
⚖️ BMI Calculator
BMI estimates whether your weight is in a healthy range for your height. It's a quick screening number, not a full health assessment — enter your details below to see where you stand.
Formula & categories
BMI = Weight(kg) / Height(m)²
Under 18.5 — Underweight 18.5–24.9 — Normal 25–29.9 — Overweight 30+ — Obese
BMI doesn't distinguish muscle from fat, so very muscular people often show as "overweight" despite low body fat — pair it with a body-fat estimate if that applies to you.
Frequently Asked Questions
Is BMI accurate for everyone?
No — it doesn't account for muscle mass, bone density, or fat distribution, so athletes and very muscular people are often misclassified. It's a population-level screening tool, not an individual diagnosis.
What's a healthy BMI range?
18.5–24.9 is classified as the normal range for most adults, though some health bodies use slightly different cutoffs for different ethnicities and age groups.
Should children use this calculator?
No — children and teens need age- and sex-specific BMI-for-age percentile charts, not the adult formula used here.
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