BMI Calculator
| BMI Chart | ||
|---|---|---|
| Adults |
Ages 2-19 (Percentiles) |
|
| Under Weight | <18.5 | <5th |
| Normal Weight | 18.5−<25 | 5th−<85th |
| Overweight | 25−<30 | 85th−<95th |
| Obese (Class I) | 30−<35 | >=95th |
| Obese (Class II) | 35−< 40 | >=120%−<140% of the 95th |
| Obese (Class III+) | >=40 | >=140% of the 95th |
Health professionals use a BMI Calculator to determine if you are at a healthy weight for your age and height. You can enter some basic information about yourself into Pennington Biomedical’s BMI Calculator to learn the following:
BMI
BMI (Body Mass Index) is an estimate of body fat and is calculated for both children and adults. A high BMI might mean you are at a higher risk for diseases associated with obesity.
BMI Percentile
The BMI Percentile is calculated for children and young adults aged 2 to 19. Health professionals can use the percentile score to categorize a child’s BMI to identify where the child falls in relation to other children of the same age and sex.
Z-Score
BMI Z-Scores are also calculated for children and young adults aged 2 to 19. This number indicates how much higher or lower your BMI is on a standard growth chart. BMI Z-Scores help health professionals to monitor weight changes in children and adolescents especially if they are in the underweight or overweight percentiles.
