Due Date Calculator Using Conception Date
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With the estimated delivery date it will count back 38 weeks to give an approximate date of conception.
Due date calculator using conception date. While mothers typically carry their unborn babies in the uterus for around 38 weeks the 40 week weeks pregnant count begins on the first day day of the woman s last period not on the date of conception which is about two weeks later. The pregnancy conception calculator estimates the date of conception based on the expected due date of the pregnancy last period date or ultrasound date. The most common way to calculate your due date is by counting 40 weeks from the first day of your last menstrual period lmp. Most pregnancies last around 40 weeks or 38 weeks from conception so typically the best way to estimate your due date is to count 40 weeks or 280 days from the first day of your last menstrual period lmp.
You can also use this calculator as a reverse due date calculator to find out when you became pregnant. Your due date is estimated to be 40 weeks after the first day of your lmp your cycle is assumed to be 28 days long with ovulation occurring at day 14 therefore the calculator adds 280 days 40 weeks to your lmp this method of due date calculation is known as naegele s rule more info on this below. It is difficult to track conception date and this is why lmp method could be more suitable to calculate the estimated due date. The date of conception is the day on which a person s baby is conceived.
In order to calculate the estimated conception date the calculator will use the last menstrual period date and then add 12 16 days to it. And that s how most healthcare providers do it. This method is based on the idea that women typically ovulate about 2 weeks after their period starts and pregnancy typically lasts about 38 weeks. Using this method due date is 38 weeks from the conception date.
The actual delivery date may be the same or different due to many other factors related to pregnancy.