IVF and FET

Pregnancy Due Date Calculator

positive pregnancy test
IVF & FET Due Date Calculator


*Please note that Seedling App does not collect, process, or store the data that you enter while using this calculator. All calculations are done exclusively in your browser. Seedling App does not have access to the results. All data will be permanently erased after leaving or closing the page.​




Congratulations, you've got your BFP! After all you've gone through, you must be eager to find out just how pregnant you are and more excitingly, when you get to meet your little miracle.

Our handy tool will help you find out exactly that! Whether you've had an IVF fresh transfer or a frozen transfer (FET), our calculator will help you pinpoint your baby's due date and establish exactly how far along you are in your pregnancy.

Just select your transfer type, pop in the date, and let our calculator do the rest.

So, how do you calculate your due date for IVF or FET transfers?


The formula for calculating your IVF Fresh or Frozen Transfer is slightly different than that for non-IVF pregnancies. This is then further adjusted depending on whether you have a Day-3 Embryo transferred or a Day-5 Embryo.


This is how you calculate the Due Date for Day 3 Transfers:

If you've had a Day 3 embryo transfer, here's how we calculate your due date: we take the date of your transfer, add the full gestation period of 266 days to it, and then simply subtract 3 days. This gives us the date you can expect your baby.


This is how you calculate the Due Date for Day 5 Transfers:

For a Day 5 transfer, the calculation is just as simple: we start with your transfer date, add 266 days for the gestation period, and then subtract 5 days. And there you have it – your due date is all set!


Enter our Fertility Corner to learn more

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