BMI Calculator – Body Mass Index (Metric & Imperial)

Free BMI calculator for adults. Enter height and weight in metric or imperial units to get BMI, category, and healthy weight range — private, no signup.

Private: calculation runs only in your browser.

Health Calculator

BMI Calculator

Calculate adult Body Mass Index from height and weight. Switch metric or imperial, see your WHO category, and a healthy weight range for your height.

Weight (kg)

Height (cm)

Your BMI

24.2Normal weight

Within the WHO normal (healthy) range.

Healthy range (kg)53.5 – 72 kg

Healthy range (lb)118 – 159 lb

BMI is a screening tool, not a medical diagnosis. It does not measure body fat directly and may misclassify muscular adults. Talk to a clinician for personalized advice.

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FAQ

What is BMI?

Body Mass Index relates weight to height. It is a screening tool, not a diagnosis.

Is BMI medical advice?

No. Muscular adults can be misclassified — talk to a clinician for personal advice.

What Is a BMI Calculator?

A BMI calculator estimates weight relative to height. Health organizations use BMI categories to flag underweight, healthy, overweight, and obesity ranges for most adults.

FAQ

What is a healthy BMI?

For most adults, 18.5–24.9 is the normal (healthy) range.