Body Mass Index (BMI) calculates body fat based on the relationship of weight and height. See the chart below.
| BMI | Meaning |
|---|---|
| Under 18 | Underweight |
| 18 - 25 | Healthy |
| 26 - 30 | Overweight |
| 31 - 34 | Obese |
| 35 - 39 | Severe Obesity |
| 40 - 49 | Morbid Obesity |
| Over 50 | Super Morbid Obesity |