Body Mass Index (BMI) Nomogram
This BMI nomogram is not intended for use with:
- those under 18 years of age,
- and pregnant and lactating women.
Visit the Question and Answer (Q & A) section for more information about weight classification and answers to questions about weight and health.
You can also calculate your BMI using this formula:
BMI = weight(kg)/height(m)2
|Classification||BMI Category (kg/m2)||Risk of developing health problems|
|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.
Source: Health Canada. Canadian Guidelines for Body Weight Classification in Adults. Ottawa: Minister of Public Works and Government Services Canada; 2003.
To clarify risk for each individual, other factors such as lifestyle habits, fitness level, and presence or absence of other health risk conditions also need to be considered.
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