10 Things to Know About Due Date Calculators

The moment you find out you are pregnant, a question soon follows: when is the baby due? In the past, women had to anxiously wait until the first doctor’s appointment to find out the due date. However, many websites now offer due date calculators. Although these calculators promise to give you an instant estimated due date, there are a few things you should know.

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1. Method of Calculation

Due date calculators provide an estimated due date (EDD), which suggests the day labor is expected to occur. It is calculated by adding 280 to the FIRST day of the last menstrual period.

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