BMI Calculator
Calculate your Body Mass Index (BMI) from height and weight to assess your body type
- · < 18.5 — Underweight
- · 18.5 – 23.9 — Normal
- · 24.0 – 27.9 — Overweight
- · ≥ 28.0 — Obese
BMI = weight (kg) ÷ height (m)². BMI only reflects the ratio of weight to height and cannot distinguish muscle from fat; results may be misleading for athletes, pregnant women, older adults, and other groups. For a health assessment, please consult a qualified doctor.
How to use
The BMI calculator quickly assesses whether your weight falls within a healthy range: enter your height (cm) and weight (kg) to instantly see your BMI value and body type (Underweight / Normal / Overweight / Obese), judged against Chinese adult reference standards (<18.5 underweight, 18.5–23.9 normal, 24–27.9 overweight, ≥28 obese). Keep in mind that BMI cannot distinguish muscle from fat: a high BMI in muscular, fit people does not mean obesity, and children, pregnant women, and older adults should use dedicated standards. This tool is for reference only and is not a substitute for professional medical diagnosis.