What is BMI?
Body Mass Index (BMI) is simply the ratio of your weight to your height, squared.
This has been used as a general guideline for obesity levels for years.
You can see where your number falls in the next chart.
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!