Free Due Date Calculator – Estimate Your Baby’s Arrival
Use our Due Date Calculator to estimate when your baby is likely to be born. Simply enter the first day of your last menstrual period (LMP) or your conception date, and the calculator will instantly show your expected due date, current pregnancy week, and trimester.
Due Date Calculator (Naegele's rule)
Frequently Asked Questions
A due date calculator gives an estimated delivery date. Actual birth may occur earlier or later depending on the mother and baby’s health and development.
Yes. Ultrasounds, cycle irregularities, and fetal growth patterns may adjust the due date. Your healthcare provider will confirm the most accurate estimate.
You can use your ovulation date, conception date, or an early ultrasound scan to estimate your due date.
Yes — IVF due dates are calculated from the embryo transfer date, but the formula is different.
If you want, I can also create a special IVF Due Date Calculator version.