Reference ranges
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Healthy weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obesity |
Common questions
Is BMI different for men and women?
The formula and categories are the same. Men tend to carry more muscle, so waist size adds useful context.
What waist size is risky for men?
Over 94 cm (37 in) raises risk and over 102 cm (40 in) is high risk, per NIH guidance.