Baby Due Date Calculator Sydney

Use this calculator to help estimate your baby’s due date and identify ideal scan and screening examination dates during your pregnancy.

Note that a baby due date calculator gives a mathematical estimate based on your last period, while a dating scan measures the physical size of the embryo via ultrasound to check growth. A ⁠morphology scan (anatomy scan at around 20 weeks) checks physical development. While the calculator sets the initial timeline, the scans evaluate growth but should not change a well-established early due date.