BMI Calculator (WHO & Korean Standard)

How it works

• BMI = weight ÷ height². WHO: under 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese.
• Korea (Korean Society for the Study of Obesity) uses Asia-Pacific cut-offs: 23–24.9 pre-obese, 25+ obese class 1, 30+ class 2, 35+ class 3. Korean health check-ups report this standard.

FAQ

What BMI is obese in Korea?

In Korea a BMI of 25 or more is obese (class 1), lower than the WHO threshold of 30.