Calculate your Body Mass Index (BMI)
Body Mass Index, or BMI, is a measurement of body fat based on height and weight.  

It can be calculated using pounds and inches:  BMI = (weight in pounds x 703) / (height in inches x height in inches).

Or you can use the calculator below:



SI Units:
US Units:
UK Units:
BMI Classification Health Risk
Under 18.5 Underweight Minimal
18.5 - 24.9 Normal Weight Minimal
25 - 29.9 Overweight Increased
30 - 34.9 Obese High
35 - 39.9 Severely Obese Very High
40 and over Morbidly Obese Extremely High

If you have a BMI of 40 or greater, or a BMI of 30-39.9 and also have an obesity related medical condition such as diabetes, high blood pressure, or sleep apnea, you may be a candidate for weight loss surgery.