Pregnancy Due Date Calculator

Estimate your baby's due date and track your pregnancy milestones

Due Date Calculator

Estimated Due Date: —

Key Milestones

    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 (LMP).

    How accurate is the estimated due date?

    Only about 5% of babies are born exactly on their due date. Most births occur within 2 weeks before or after the EDD.

    What trimester am I in?

    First trimester: weeks 1–12. Second trimester: weeks 13–26. Third trimester: weeks 27–40.