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BMI Calculator

Find your BMI and its standard weight category.

Educational estimate only — not a diagnosis. Values are calculated in your browser and never stored. Discuss your results with a licensed clinician.

Frequently asked questions

Is BMI accurate for everyone?

BMI is a quick screen, not a body-fat measurement. Very muscular people may read high, and it doesn't capture where fat is stored. Use it alongside other measures.

What is a healthy BMI?

For most adults 18.5–24.9 is considered the normal range, but a healthy weight depends on your overall health — talk with your doctor.

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AskMyDoctor AI

Medical disclaimer: AskMyDoctor AI provides general medical information and education. It does not diagnose medical conditions or replace care from a physician or other qualified healthcare professional. Information is drawn from public U.S. government medical sources and may not fit your personal situation. If you may be experiencing a medical emergency, call 911.

Medical answers are independent and are never influenced by advertisers. Sources include MedlinePlus (National Library of Medicine), the U.S. Food and Drug Administration (openFDA), and RxNorm. © 2026 AskMyDoctor AI.