The Body Mass Index (BMI)
is a relationship between weight and height
that is associated with body fat, nutritional status and health risk.
You can calculate your BMI using this formula:
BMI = weight (kg)/height (m)²
Health Risk Classification According to your BMI
Classification |
BMI Category (kg/m2) |
Risk of developing health problems |
Underweight |
< 18.5 |
Increased |
Normal Weight |
18.5 - 24.9 |
Least |
Overweight |
25.0 - 29.9 |
Increased |
Obese class I |
30.0 - 34.9 |
High |
Obese class II |
35.0 - 39.9 |
Very high |
Obese class III |
> 40.0 |
Extremely high |
Note: For persons 65 years and older the 'normal' range may begin slightly above BMI 18.5 and extend into the 'overweight' range.
There is no single ideal body weight, only a healthy weight range. People often have weight goals, however without consideration of height they can be unrealistic. It is important to always factor height in determining your ideal weight. Use the
healthy height/weight
chart provided to look up your height and find your corresponding ideal weight range. These should be used as a guide only. If you are unsure of your result or need a more detailed and specific weight, please see your doctor.
Click the links below to view our useful BMI and Healthy Height/Weight charts:
BMI chart
Healthy Height/Weight Chart

Download
Weekly Nutrition Diary