Keisan Tools
Back to English Top

BMI Calculator

Body Mass Index based on height and weight. Universal formula.

2026 tax-year compliantSwitch to Japanese version

BMI Calculator

Body Mass Index based on height and weight. Universal formula.

  1. 1. Enterfill in details
  2. 2. Calculateclick the button
  3. 3. Resultshown instantly
cm
kg

Key Points

  • Formula: weight (kg) / height (m)²
  • Japanese ideal: BMI 22
  • Obesity threshold: 25 (Japan) vs 30 (WHO)

FAQ

Japanese vs WHO categories?

Japan classifies obesity from BMI 25, not 30 like WHO. Asians have higher disease risk at lower BMI.

⚠️ Disclaimer

This calculator provides estimates only. For actual tax filing, please consult a licensed 税理士 (zeirishi) or FP (Financial Planner). Results are not a substitute for professional advice.

← See more English calculators