01 Jan, 1970
Learn how to calculate due date using Naegele's rule, ultrasound dating, and conception tracking. Understand accuracy factors like irregular cycles, IVF pregnancies, and multiples. Includes comparison tables and OB-GYN confirmation timelines.
Discover what makes a due date calculator truly accurate: cycle adjustments, ultrasound integration, and IVF modes. Learn why standard tools fail and how to avoid common miscalculations.