Weight loss calculator measures body mass index based on your weight and height and is used as a relative measure of your health. For adults, this information is used to determine if your weight relative to your height is either underweight, normal weight, overweight, or obese.People who are overweight or obese are at higher risk for chronic conditions such as high blood pressure, diabetes, and high cholesterol. Anyone who is overweight should try to avoid gaining additional weight. Additionally, if you are overweight with other risk factors (such as high LDL cholesterol, low HDL cholesterol, or high blood pressure), you should try to lose weight. Even a small weight loss (just 10% of your current weight) may help lower the risk of disease. Talk with your healthcare provider to determine appropriate ways to lose weight. Information courtesy of Centers for Disease Control and Prevention.