Calculators Adult BMI Calculator 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. Calorie Burn Rate Calculator The more active you are, the more calories you burn. Running or jogging, for instance, burns more calories than bowling. Children's Asthma Peak Flow Calculator This calculator is for children with asthma. If you know your child's height, you can find his or her predicted peak flow. Children's BMI Calculator 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. Cost of Drinking Calculator 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. Cost of Smoking Calculator 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? Due Date Calculator It is important to know your estimated due date in order to help plan for the baby's birth. Ovulation Date Calculator When you are trying to have a baby, fertile times are an important factor. Use this information about your cycles to help to predict your more fertile times and when you will ovulate. Target Heart Rate Calculator 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.