What is a Period Calculator?

A Period Calculator is a useful tool designed to help individuals track and predict their menstrual cycle. By entering information such as the first day of the last period and the average cycle length, the calculator can estimate future period dates, ovulation windows, and fertile days. This makes it easier to plan ahead, monitor reproductive health, and identify changes in cycle patterns. Many period calculators are available online and through mobile apps, offering a convenient way to stay informed about menstrual health and fertility.