BMI Calculator

Body Mass Index Assessment Tool

BMI Classification Scale

Under-
weight
Normal
Over-
weight
Obese
I
Obese
II
Obese
III
<18.5
18.5–25
25–30
30–35
35–40
>40
CategoryBMI RangeClassification
Underweight< 18.5Below normal weight
Normal weight18.5 – 24.9Healthy weight range
Overweight25.0 – 29.9Above normal weight
Obese Class I30.0 – 34.9Moderate obesity
Obese Class II35.0 – 39.9Severe obesity
Obese Class III≥ 40.0Very severe obesity
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