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BMI Calculator

Calculate Body Mass Index from height and weight.

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How to use this tool

  1. 1Enter your height in centimeters and weight in kilograms.
  2. 2Your BMI and category appear instantly.
  3. 3Use it as a general reference, not a medical diagnosis.

Frequently asked questions

What are the standard BMI categories?

Under 18.5 is underweight, 18.5–24.9 is normal, 25–29.9 is overweight, and 30+ is considered obese.

Is BMI accurate for everyone?

It's a general population screening tool and doesn't account for muscle mass, bone density, age, or sex — athletes in particular can score higher than expected.

Should I make health decisions based on BMI alone?

No — treat it as a starting reference point and speak with a healthcare professional for a fuller picture.