The Body Mass Index (BMI) calculator is a measure of an individual's body fat based on height and weight. Because a BMI calculator is not able to determine between fat or muscle, it is not recommended for pregnant women, children, the elderly, muscle builders or long-distance athletes.
The healthy range for BMI is 18.5 to 24.9. A BMI of 25.0 to 29.9 is considered overweight and 30.0 or greater is considered to be obese. BMI applies to most adults 18-65 years.
Please visit Health Canada's Guidelines for Body Weight Classification in Adults.