IVF Due Date Calculator

What is an IVF pregnancy due date?

An IVF pregnancy due date is an estimated due date for your baby’s arrival if you conceived via in vitro fertilization (IVF). It’s based on your IVF embryo transfer date.

Most embryo transfers happen either three days or five days after egg retrieval and fertilization, using your own fresh or frozen embryos. A frozen embryo transfer is also known as an FET.

3-day embryo transfer

If you had a three-day IVF embryo transfer, count or add 263 days from the transfer date to calculate your due date. You can also take your transfer date, add 266 days (38 weeks) to it and subtract three days. Or choose the “3-day transfer” option from our dropdown menu above.

5-day embryo transfer

If you had a five-day embryo transfer, count 261 days from that date to calculate your due date. Put another way, you can add 266 days to your transfer date and then subtract five days. Or pick “5-day transfer” in the tool above.

What other ways can you calculate your IVF due date?

You can calculate your due date if you have an embryo transfer date of more than five days – you just subtract that number of days from 266 and add that number to the transfer date. These calculations also apply if you undergo embryo transfer following egg donation or donor embryo cycles.

If you use a donor egg, there’s also a way to calculate your due date. With either a fresh donor egg or a donor embryo, count 266 days from the date of egg retrieval to get your estimated due date.

How do you calculate your due date if you get pregnant without IVF?

If you happen to get pregnant without IVF, you can calculate your due date using your last menstrual period (LMP), your date of conception if you know it, or the date of your first ultrasound scan if you have an early one.

Use our pregnancy due date calculator to find out more about all these methods of figuring out when baby will arrive, and try each one that’s applicable to you!

Other resources

What week does an IVF transfer happen?

IVF transfers typically happen during the second week of pregnancy. You can add two weeks to the date of your transfer to find out how many weeks pregnant you are.

How many weeks pregnant are you after a five-day embryo transfer?

If your embryo transfer is a success, you would be 2 weeks and 5 days pregnant on the day of your transfer.

Is your due date different with IVF?

Your IVF pregnancy is still the same length as a natural pregnancy, but you can calculate your due date based on your transfer date, rather than on the first day of your last period or on your conception date.