Due date calculator.

A typical pregnancy lasts, on average, 280 days, or 40 weeks - starting with the first day of your last normal menstrual period (LMP) as day 1. An estimated due date (EDD) can be calculated by following steps 1 through 3:

1. First, determine the first day of your last menstrual period. If you do not know the exact date, calculate as close aspossible.
2. Next, count back three calendar months from thatdate.
3. Lastly, add one year and seven days to thatdate.
Image of a pregnant woman.
You may also estimate your delivery date by entering the first day of your last menstrual period here:
Image of a pregnant woman.
Click here to calculate your estimated due date. Click here to reset the fields.
Your estimated due date is:
This estimate is based on your last menstrual period and estimated date of conception. If you think you may be pregnant, it is advised
to consult your physician right away.