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Congratulations, you're pregnant!  To find out what your estimated due date (EDD) is, enter the first day of your last menstrual cycle below.




Estimated Date of Conception:
End of First Trimester (12 weeks):
End of Second Trimester (27 Weeks):
Estimated Due Date:



How your due date is calculated:


Your due date is estimated by adding 40 weeks (280 days) to the first day of your last menstrual cycle.  This 280 days is based upon 266 days of gestation (the length of a typical pregnancy) plus the 14 days from the start of your last menstrual period (LMP).  Only 5% of women deliver their babies on their estimated due date (EDD), so this date should be used only as a guide - it is not an exact calculation. 


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