IVF and FET Due Date Calculator

How Accurate Are IVF Due Dates?

The IVF Warrior’s IVF and FET Pregnancy Due Date Calculator estimates the arrival of your baby. It works based on your IVF type: donor eggs, donor embryos, fresh cycle, or an FET (3-day or 5-day). Due date calculations may vary regardless of whether you conceived naturally or via IVF. But, even with IVF and ultrasound imaging, no due date is a guarantee.

Different IVF Cycle Options:

There are several types of variables that can take place during an IVF cycle:

• IVF using own eggs cycle

• IVF with fresh donor eggs cycle

• Fresh donor embryo cycle

• 3 day frozen embryo transfer (3-day FET) cycle

• 5 day frozen embryo transfer (5-day FET) cycle

How many weeks pregnant are you?

Typically, pregnancy lasts for about 40 weeks (280 days). If you conceive at-home with no medical assistance, the estimated due date is generally determined based on the first day of your last period (cycle day 1), not from the date of conception.

Why? Typically, this is because most people don’t know exactly when they ovulated or when they conceived. Someone with a regular 28-day menstrual cycle usually ovulates around day 14, but cycles can vary in length. However, this date isn’t 100-percent accurate, as ovulation can occur earlier or later. This is why a due date is just a rough estimate of the day the baby is likely to arrive, not a guarantee. 

Disclaimer: Every pregnancy is different, so the dates given are approximate. This tool should not be considered as a substitute for any professional medical service nor as a substitute for clinical judgment from a healthcare professional.