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BMI Calculator

Compute BMI from height and weight, classify by China standard and show the normal weight range.

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How to use

  1. Enter "Height (cm)" and "Weight (kg)"; BMI computes live.
  2. Results classify by China standard: underweight/normal/overweight/obese.
  3. It also shows the China-standard normal weight range (18.5–23.9 × height²).
  4. Tip: China's cutoff is stricter than WHO, normal cap is 24 not 25.

FAQ

China-standard BMI cutoffs?

Underweight <18.5, normal 18.5–23.9, overweight 24–27.9, obese ≥28 (slightly different from WHO).

How is the normal weight range computed?

Using the normal BMI range 18.5–23.9 times height squared; it varies with height.