The Due Date Calculator estimates your expected delivery date based on your last menstrual period (LMP) or conception date. Using Naegele's rule, it adds 280 days (40 weeks) from your LMP to calculate the estimated due date.
The calculator also shows your current week of pregnancy, trimester, and a week-by-week progress tracker. Two modes are available: calculate from LMP date or from known conception date.
Your calculations will appear here
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