Use these calculators to help determine your ideal body weight, how many calories you need each day and how many you can burn with activities, and what your target heart rate should be during exercise. Smokers can find tools to help them determine how many cigarettes they have ever smoked and how much the habit has cost them.

Body Mass Index (BMI) Calculator

Excess body weight can affect your risk of several diseases, including some types of cancer. Find out if you're at a healthy body weight here.

Cigarette Calculator

Any idea how many cigarettes you have smoked in a given time period? The answer might surprise you.