Pregnancy Due Date Calculator
Calculate your estimated due date based on your last menstrual period or conception date. Includes trimester milestones and week-by-week guidance.
Frequently Asked Questions
How is due date calculated?
Naegele's rule: LMP + 1 year - 3 months + 7 days. This assumes a 28-day cycle with ovulation on day 14.
How accurate is the due date?
Only ~4% of babies are born on their exact due date. Most deliver within 2 weeks before or after.