Below are the BMI weight status categories for adults 20 years and older.
- Severely underweight – BMI less than 16.5
- Underweight – BMI under 18.5
- Normal weight – BMI greater than or equal to 18.5 to 24.9
- Overweight – BMI greater than or equal to 25 to 29.9
- Obesity – BMI greater than or equal to 30
- Obesity class I – BMI 30 to 34.9
- Obesity class II – BMI 35 to 39.9
- Obesity class III – BMI greater than or equal to 40 (also referred to as severe, extreme, or massive obesity)
- Asian and South Asian population
- overweight – BMI between 23 and 24.9
- obesity – BMI greater than 25
References
Weir, C. B., & Jan, A. (2022). BMI Classification Percentile And Cut Off Points. In StatPearls. StatPearls Publishing.