Classification of overweight &obesity in adults as per BMI

Classification BMI (kg/m2)

Underweight >18.5
Normal range 18.5—24.9
Overweight >25
Pre-obese 25.0—29.9
Obese class I 30.0—34.9
Obese class II 35—39.9
Obese class III >40

Source: WHO

 Sex-specific waist circumference measurements for
identification of individuals at increased health risk due to
intra-abdominal fat accumulation
Waist circumference
(cm)
Risk of metabolic complications
                                                                  Men       Women
Alerting zone Increased                             94           80
Action zone Substantially increased         102           88

Adapted from WHO