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