A service of the U.S. National Library of Medicine and the National Institutes of Health, log on to utilize quizzes, calculators, self-assessments, and decision guides to check your knowledge and health status in over 99 health categories.

Here, you can find out your risk of developing five of the most common diseases in the United States and get personalized tips for preventing them. Developed by the Harvard Center for Cancer Prevention, Your Disease Risk collects the latest scientific evidence on disease risk factors into one easy-to-use tool.

A joint venture of the American Diabetes Association and Archimedes, Diabetes PHD (Personal Health Decisions) is a powerful new risk assessment tool. It can be used to explore the effects of a wide variety of health care interventions, including losing weight, stopping smoking, and taking certain medications.

The Alcohol Cost Calculator

Alcohol problems are the third leading cause of preventable death in America. They destroy millions of families, rob millions of young people of their futures and drain $186 billion from our economy every year. Yet few people know how much alcohol problems cost at the community or company level. By using tools to calculate the human and economic consequences of alcohol problems, you can work more effectively to improve access to treatment.

Depression Calculator

Depression is a leading cause of absenteeism and low productivity in the workforce How much is depression among your own employees costing you? The Productivity Impact Model (PI Model) can help estimate depression's costs to your company, and can also project the benefits when depressed employees receive treatment.

How many calories do you need each day?

Find the number of calories you should eat each day to maintain your current weight. If you're overweight, use the average healthy weight recommended for your height. Tools are also provided to calculate the number of calories burned during exercise, with the Calorie Calculator, and to compute your best workout with the Target Heart Rate Calculator.

A series of interactive tools to help you assess your personal health and wellness.

Body Mass Index Calculator

Brought to you by the National Heart Lung and Blood Institute of the DHHS & National Institutes of Health, this calculator helps you figure your body mass index (BMI).