What is BMI?
Body Mass Index (BMI) is simply the ratio of your weight to your height, squared.
You can see where your number falls in a chart divided between
"underweight", "normal", "overweight" and "obese".
If you don't like the number we calculate for your BMI, go back to this page
and put in a different weight.
We even do the math to show you how far you are from a healthier range!