Experts are increasingly urging people to know their BMI, a figure that takes into account not just weight but also height to indicate body fat.

Don’t just trust your scale to tell you if you are too heavy. The tool uses not just what you weigh, but also how tall you are. The goal for most people is a score between 18 and 25.

You need to know your personal best peak flow number to help control your asthma. This calculator will determine your Green, Yellow, and Red Zones, based on your personal best peak flow number.

You need to know your personal best peak flow number to help control your asthma. This calculator will determine your Green, Yellow, and Red Zones, based on your personal best peak flow number.

This tool is for people with asthma. To use this tool, you must have a peak flow number. Your peak flow is how fast you exhale air after taking a deep breath. Your peak flow tells you and your doctor how well your lungs are working.

It is important to know your estimated due date in order to help plan for the baby's birth.

The more active you are, the more calories you burn. Running or jogging, for instance, burns more calories than bowling.

The tool will provide you with an estimate of how many calories you will burn for the activities listed.

BMI, or body mass index, uses weight and height to calculate weight status for adults. BMI for children and teens also takes into account gender and age because healthy body fatness differs between boys and girls and changes as they grow. This BMI calculator will help you determine if your child is at a healthy weight.

You'll need to know mom and dad's current height to help calculate the estimate of how tall the child will be when she or he becomes an adult.

Drinking can be an expensive habit. While you may not notice a dollar here or two dollars there, consider how much you spend per week and per year on alcohol.

Drinking can be an expensive habit. While you may not notice a dollar here or two dollars there, consider how much you spend per week and per year on alcohol.

There isn't much good that can be said about smoking. Now, on a positive note, do you know how much money you can save if you quit smoking today?

There isn't anything good that can be said about smoking. It's bad for your health and the health of those around you. Now, on a positive note, do you know how much money you could save if you quit smoking today?

It is important to know your estimated due date in order to help plan for the baby's birth.

Immunizations are one of the best ways to keep your child healthy and avoid serious illness.

When a person is attempting to have a baby, fertile times become an important factor. Using information about your cycles will help to predict your more fertile times and when you will ovulate.

When a person is attempting to have a baby, fertile times become an important factor. Using information about your cycles will help to predict your more fertile times and when you will ovulate.

Your target heart rate is the range at which sustained physical activity - running, cycling, swimming laps, or any other aerobic exercise - is considered safe and effective.

Your target heart rate is the range at which sustained physical activity--running, cycling, swimming laps, or any other aerobic exercise--is considered safe and effective.

According to the American Heart Association, women with a waist-to-hip ratio of more than 0.88 and men with a ratio of more than 0.95 have a decreased risk for obesity-related health problems. Find out how you score.