Body Mass Index
Body Mass index is measurement that compares a persons height and weight. It is a helpful tool to estimate a persons healthy body weight. It also allows for a more formal definition of obesity (BMI > 30).
BMI = Weight (kg) / Height² (kg²)
What is your Body Mass Index?
| Category |
BMI range – kg/m2 |
BMI Prime |
Severely underweight
(ex. anorexia) |
less than 16.5 |
less than 0.66 |
| Underweight |
from 16.5 to 18.5 |
from 0.66 to 0.74 |
| Normal |
from 18.5 to 25 |
from 0.74 to 1.0 |
| Overweight |
from 25 to 30 |
from 1.0 to 1.2 |
| Obese Class I |
from 30 to 35 |
from 1.2 to 1.4 |
| Obese Class II |
from 35 to 40 |
from 1.4 to 1.6 |
| Obese Class III |
over 40 |
over 1.6 |