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BMI calculator

Calculate your body mass index (BMI) in metric or imperial units and see your category on the WHO adult scale.

How to use the BMI calculator

  1. Enter your details in the boxes above.
  2. The result updates instantly as you type.
  3. Copy or download the result when you’re happy with it.

Why use it here

  • Free. No sign-up, no limits, no watermark.
  • Private. Runs in your browser, so nothing is uploaded.
  • Anywhere. Works on phones and computers.

Questions about the BMI calculator

Is the BMI calculator free?

Yes, completely free, with no sign-up, no limits on use and no watermark.

Is my information saved or sent anywhere?

No. Everything is worked out in your browser. Some entries are remembered on this device only, so they’re still there next time.

Does it work on my phone?

Yes. It works in any modern browser on Android, iPhone, Windows and Mac, with nothing to install.

Is BMI accurate for everyone?

BMI is a quick screening number for adults. It doesn’t tell muscle from fat, and it isn’t meant for children or pregnancy. Speak to a doctor about your health.

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