BMI Calculator
Calculate your Body Mass Index from height and weight in metric or imperial.
Your measurements
BMI chart
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Underweight (<18.5)
Normal weight (18.5–25)
Overweight (25–30)
Obese (30+)
What the tool does
BMI Calculator estimates Body Mass Index from height and weight in metric or imperial units. It is a screening number, not a full health diagnosis.
How to use it
- Choose metric or imperial units.
- Enter height and weight.
- Review your BMI and category label.
Supported formats
- Metric: centimeters / kilograms
- Imperial: feet-inches / pounds
Privacy & security
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
FAQs
- What is a healthy BMI range?
- Common adult charts treat roughly 18.5–24.9 as a standard “normal” range, but healthy bodies vary. Ask a clinician for personal advice.
- Is BMI accurate for athletes?
- BMI does not distinguish muscle from fat, so muscular people may score higher without excess fat.
- Do you store my measurements?
- No. Calculations stay on your device.