BMI Calculator
Calculate body mass index and compare it against WHO and Chinese standards
身高体重输入
输入即自动计算，BMI = 体重(kg) / 身高²(m²)
请输入身高和体重
About this tool
The BMI calculator checks whether your weight sits in a healthy range:
- Instant result: enter height and weight to see BMI immediately
- Two standards: the WHO scale and the Chinese BMI scale
- Four bands: underweight, normal, overweight and obese
- Ideal weight: the healthy weight range for your height
- Visual scale: a bar shows where you sit
When to use it
- Everyday health checks
- Before and after a fitness programme
- Reading a medical checkup
- Setting a weight goal
BMI bands
- WHO: below 18.5 underweight, 18.5 to 24.9 normal, 25 to 29.9 overweight, 30 and above obese
- Chinese standard: below 18.5 underweight, 18.5 to 23.9 normal, 24 to 27.9 overweight, 28 and above obese
- Formula: BMI = weight divided by height squared
- Limits: BMI does not separate muscle from fat, so athletes can read high