BMI Calculator
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BMI Index
Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. It is widely used as a common indicator of whether a person has a healthy body weight for their height. The value obtained from the calculation of BMI is used to categorize whether a person is underweight, normal weight, overweight, or obese depending on the range in which it falls.
BMI Formula
The formula used for calculating the BMI index in (kg/m2) is given below:
BMI(kg/m2) = mass(kg) / height2(m)
Alternatively, it can also be expressed as:
BMI(kg/m2) = mass(lb) / height2(in) × 703
BMI Category
| BMI Range | BMI Category | BMI Sub-Category |
|---|---|---|
| < 16 | Underweight | Severe Thinness |
| 16 - 17 | Moderate Thinness | |
| 17 - 18.5 | Mild Thinness | |
| 18.5 - 25 | Normal | Normal |
| 25 - 30 | Overweight | Overweight |
| 30 - 35 | Obese | Obese Class I |
| 35 - 40 | Obese Class II | |
| > 40 | Obese Class III |
BMI chart for adults
This is a graph of BMI categories Based on the World Health Organization data, . The dashed lines represent subdivisions within a major categorization.
