Pregnancy Due Date Calculator (Naegele's Rule)

Estimates expected date of delivery (EDD) using Naegele's rule and alternative methods.

days
If not 28 days, adjust accordingly.
ACOG recommends 1st trimester ultrasound for dating if available.
weeks + days
e.g., 8+3 for 8 weeks 3 days.

Enter values and click Calculate to see results

References

  1. Methods for estimating the due date. ACOG Committee Opinion (2017). Link