The Canadian Guidelines for Body Weight Classification in adults uses the body mass index (BMI) and waist circumference as indicators of health risk.
Find your BMI now by using the BMI calculator below. Click here if you are on a mobile device to access the calculator. Note: Keep the Measure at default "Non-Metric" if you are using feet/inches and pounds for height and weight respectively.
The BMI is not a direct measure of body fat but it is the most widely investigated and most useful indicator, to date, of health risk associated with under and overweight.
Classification | BMI Category | 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 Class II Class III |
30.0 - 34.9 35.0 - 39.9 ≥ 40 |
High Very High 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.
Adapted by the Canadian Guidelines for Body Weight Classification in Adults - Quick Reference Tool for Professionals