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BMI calculator for adults

Body mass index is a rough screening number, not a diagnosis. Here is yours, with what the ranges mean.

BMI does not account for muscle, age, sex or ethnicity. Talk to a doctor about your health.

Private by design: this tool runs in your browser. Nothing you add is uploaded.

How to use it

  1. Choose your units: feet and pounds, or centimetres and kilograms.
  2. Enter your height.
  3. Enter your weight.
  4. Read your BMI and what the ranges mean.
Screenshot of the BMI calculator tool on Sureno, in use
BMI calculator in use: a real screenshot of this page.

Questions and answers

What is a healthy BMI?

For most adults, 18.5 to 24.9 is considered a healthy range by the CDC and WHO.

Is BMI accurate?

It is a simple screening tool. Athletes and older adults can be misclassified, so it is only a starting point.

Is my weight stored?

No. The calculation happens on this page only.

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