BMI Calculator

Body Mass Index in metric or imperial units — with both the WHO standard and the Asian-Pacific cutoffs that Korean clinics actually use.

Units

Metric (cm·kg) Imperial (ft·lb)

Height (cm)

Weight (kg)

ℹ️ WHO categories: under 18.5 underweight · 18.5–24.9 normal · 25–29.9 overweight · 30+ obese. Asian-Pacific (used in Korea): 23–24.9 overweight · 25+ obese — research shows health risks rise at lower BMI in Asian populations. BMI is a screening number, not a diagnosis; muscle mass, age and body composition matter.