How it works
BMI = weight (kg) ÷ height (m)²
What the number means
- Under 18.5 — underweight
- 18.5 to 24.9 — healthy weight
- 25 to 29.9 — overweight
- 30 and over — obese
Example
70 kg at 175 cm gives a BMI of about 22.9 — a healthy weight.
BMI is a general guide only and doesn't account for muscle, build or age. It is not medical advice.