A pregnancy due date calculator is used to determine the unborn baby’s due date. The calculator works from the first day of the last period and the cycle duration.

However, it should be noted that the normal range of time between conception and birth may vary from 38 weeks to 42 weeks. It depends on the mother’s menstrual cycle and the date of the last period to confirm the due date. A pregnancy due date calculator adopts the method that doctors use to tell the due date. 280 days from the first day of the last period is usually considered the due date.

While the due date calculator gives a first glance of when the baby may be due, a pregnancy ultrasound scan may provide a more accurate determination of the unborn baby’s due date.

After using the due date calculator, it will be wise to hold off on calling the printer for the birth announcements. Since knowing the exact date of conception is not always possible, it will indeed be a bad idea. Remember, most of the due date calculators work on the basis of a fixed normal gestational period.

Whatever date the pregnancy due date calculator tells you as the due date for the unborn baby is the result of its assumption that the mother has ovulated and conceived exactly two weeks after the first day of the last period and will carry the baby for exactly 38 weeks. Clearly, there is a problem with this process. The due date that the pregnancy due date calculator tells you is simply an estimation, not a sure date.

There is a variety of some excellent pregnancy due date calculators available on the internet. Just do some research and you will be able to calculate the due date of your unborn baby, an estimated due date though, the date when that bundle of joy can possibly be in your arms.