BMI Calculator

At Take Shape for Life, one of the goals of each Health Advisor is to help their overweight clients reach their optimal weight as measured by his or her Body Mass Index (BMI). The National Institutes of Health and the National Heart, Lung & Blood Institute support the use of BMI as it provides a more accurate measure of total body fat compared with the assessment of body weight alone.

Experts generally consider a BMI below 19 to be underweight and a BMI of 20 to 25 to be healthy. BMIs of 25 to 30 are generally considered overweight. BMI over 30 are generally considered to be overweight or obese. If you need to lose weight and are looking for a way to make Optimal Health a Reality, Take Shape for Life and our qualified Health Advisors can help.

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Please note: There are some limitations to the Body Mass Index calculation, because it does not measure body composition. BMI overestimates body fat in persons who are very muscular and it can underestimate body fat in persons who have lost muscle mass — e.g., many elderly. People with more muscular builds may be classified as overweight according to BMI numbers even if they have a very healthy body fat percentage. A high BMI from increased muscle alone is not associated with health risks.