Table ES-2Classification of Overweight and Obesity by BMI

Obesity ClassBMI (kg/m2)
Underweight< 18.5
Normal18.5 – 24.9
Overweight25.0 – 29.9
ObesityI30.0 – 34.9
II35.0 – 39.9
Extreme ObesityIII≥ 40

From: Executive Summary

Cover of Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults
Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults: The Evidence Report.
NHLBI Obesity Education Initiative Expert Panel on the Identification, Evaluation, and Treatment of Obesity in Adults (US).

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