Knowing your risk factors for a variety of diseases is a simple first step toward good health. Below are some quick, easy-to-use online health calculators that will give you a basic understanding of your risk for developing certain health conditions.

Compare your actual age to your heart's biological age, calculate your risk of developing cardiovascular disease, and prioritize your most harmful risk factors.

See how well your knee or hip joints are working. Then see if surgery may help you live a better life.

There are many factors that increase risk of stroke. Take this brief survey to see how your stroke risk adds up.

Find out if your weight is impacting your health, and if weight-loss surgery may be an option for you.