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What the tool does

Calculates body mass index: weight in kilograms divided by height in metres squared, and names the range.

How to use it

  1. Enter height in centimetres.
  2. Enter weight in kilograms.
  3. See the result.

Good to know

  • BMI is a rough guide and does not replace a doctor.
  • It can be inaccurate for children and athletes.

Frequently asked questions

What BMI is normal?
Usually from 18.5 to 25.
Is the data saved?
No, everything is worked out in your browser.