BMI Calculator
Calculate BMI from height in centimeters and weight in kilograms. Result categories use Chinese adult BMI thresholds (18.5, 24, and 28).
Real-time Results
Body Mass Index
Ideal weight range based on BMI
Assessment
Weight category based on BMI
BMI Chart
Visual representation of BMI categories
Disclaimer
The data provided by this health calculator is for reference only and cannot replace professional medical diagnosis, consultation, or treatment. Please consult a doctor before making any changes to your fitness or diet plan.
Why Choose BMI Calculator
Calculate BMI from height in centimeters and weight in kilograms. Result categories use Chinese adult BMI thresholds (18.5, 24, and 28).
- ✓BMI = kg / m²
- ✓The result uses Chinese adult thresholds: underweight <18.5, normal 18.5 to <24, overweight 24 to <28, and obesity ≥28. WHO uses 25 and 30 for adult overweight and obesity. These are different standards; the calculator does not switch between them.
How to Calculate
- 1Enter height in centimeters (cm).
- 2Enter weight in kilograms (kg).
- 3Read the BMI, adult category, and corresponding weight range.
Frequently Asked Questions (FAQ)
Which BMI standard does this calculator use?
The result uses Chinese adult thresholds: underweight <18.5, normal 18.5 to <24, overweight 24 to <28, and obesity ≥28. WHO uses 25 and 30 for adult overweight and obesity. These are different standards; the calculator does not switch between them.
Can I check the calculation with an example?
For 175 cm and 70 kg: BMI = 70 ÷ 1.75² ≈ 22.86. The displayed result is 22.9 after rounding to one decimal. Classification uses the unrounded value.
Does BMI measure body fat or work for children?
BMI uses only height and weight, so it cannot distinguish muscle from fat. The categories here are for adults and should not be applied to children or pregnancy. BMI alone is not a diagnosis; interpret it with other measurements and professional advice.
Authoritative References & Sources
国家卫生健康委：《成人肥胖食养指南（2024 年版）》附录 5；WS/T 428-2013
View SourceWHO: Obesity and overweight
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