BMI Calculator

Calculate BMI from height and weight. Japanese standard categories.

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How it works

  1. 1Enter your height in centimeters (e.g., 170).
  2. 2Enter your weight in kilograms (e.g., 70).
  3. 3BMI is calculated as weight ÷ (height/100)².
  4. 4Category is shown: Underweight, Normal, Obese (Grade 1), or Obese (Grade 2+) per Japanese Obesity Society standards.

Example

Input: Height 170cm, Weight 70kg
Output: BMI 24.2, Category: Normal