BMI Calculator


Body Mass Index (BMI) is a ratio of your height and weight. Knowing your BMI is a good start to determining whether you are overweight or not. Previously a BMI of > 27 was considered too high. More recently, that number was revised down to 25.

Using this newer, more aggressive definition of over-weight, over 100 million Americans are overweight and probably 10 million Canadians fall into this category. This epidemic of obesity starts in childhood and contributes in large measure to the development of hypertension, heart disease, stroke and diabetes.

In order to achieve a BMI that is appropriate to our height we must all modify our lifestyle and eating habits. Adequate rest and physical activity are necessary partners
to a healthy diet in achieving weight reduction.

Re-Calculating a Hefty Sum

The U.S. government’s new standard, based on “body mass index,” increases the number of North American adults defined as overweight.

How to calculate your Body Mass Index

Body Mass Index (BMI) is a ratio of height and weight. On this chart, the numbers across the top are the BMI. Heights are show on the left, and the numbers making up the box are weights in pounds. To find your BMI, find your height, then look across to the box with the appropriate height. The number at the top of that column is your BMI.

You can call the Ottawa-Carleton Regional Health Department's nutrition line at 722-2242 ext 3403 to obtain a Health Canada BMI chart, or you can calculate your BMI by visiting an the NHLBI Website at

How to calculate your waist-to-hip ratio

  1. Measure your waist at your navel (In inches or centimeters).
  2. Measure your hips at the widest point (over your buttocks).
  3. Divide your waist measurement by your hip measurement.

For example: if you have a 27 inch waist and 38-inch hips, divide 27 by 38 to get a waist hip ratio of 0.71. For most women, the waist-to-hip ratio should fall below 0.80. For most men, the waist to hip ratio should be no greater than 1.0

Return to Top


  Version 2.0, June 2006
This site complies to the HONcode standard for trustworthy health
information: verify here.


Please note:, its contents and downloads, are no longer actively maintained and remain online for historical purposes as a legacy site.