The
body mass index is a very useful approximation of a person's percentage of body fat, and indicates pretty accurately whether they are under, over or at an optimal weight. It provides a simple numeric measure of "fatness" or "thinness" based on height.
| Category | Value |
| Severely underweight | less than 16.5 |
| Underweight | 16.5 to 18.4 |
| Normal | 18.5 to 24.9 |
| Overweight | 25 to 30 |
| Obese | 30.1 to 40 |
| Morbidly Obese | over 40 |
Calculate your BMI