Pregnancy Due Date Calculator
Track your pregnancy milestones with our EDD and gestational age tool.
Pregnancy Due Date Form
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Understanding Your Results
Naegele's rule estimates the due date by adding 280 days (40 weeks) to the first day of the last menstrual period.
Frequently Asked Questions
How is my due date calculated?
The most common method uses the first day of your last menstrual period and adds 280 days (40 weeks).
Is the due date exact?
No. Only about 5% of babies are born on their estimated due date. Full term ranges from 37 to 42 weeks.
What if I do not remember my last period?
An early ultrasound can accurately estimate gestational age and establish a reliable due date.
Does IVF change due date calculation?
Yes. IVF due dates are calculated from the embryo transfer date or egg retrieval date rather than the last menstrual period.
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