Pregnancy Due Date
Calculate your expected due date and current week of pregnancy.
How it works
Enter the first day of your last menstrual period (LMP). The pregnancy due date calculator adds 280 days (40 weeks) to estimate your Expected Due Date (EDD) and shows your current week of pregnancy along with key milestones.
Why use this tool?
One of the most searched health tools globally. Every expecting mother uses a pregnancy due date calculator to plan prenatal appointments, maternity leave, and baby preparation timelines.
Frequently Asked Questions
How is the due date calculated?
The standard method (Naegele's Rule) adds 280 days (40 weeks) to the first day of your last menstrual period. This assumes a regular 28-day cycle and ovulation on day 14.
How accurate is the calculated due date?
Only about 5% of babies are born on their exact due date. Most births occur within 2 weeks before or after. The due date is a central estimate, not a precise prediction.
What are the key pregnancy milestones?
Week 4: Missed period, positive test. Week 8: Heartbeat detectable. Week 12: End of first trimester, miscarriage risk drops. Week 20: Anatomy scan, mid-pregnancy. Week 28: Third trimester begins. Week 37: Full term.
Is this free?
Yes, completely free. Enter your last menstrual period date to see your due date and week-by-week timeline.
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