IVF Due Date Calculator

IVF & Embryo Planning Tool

An IVF due date calculator estimates an expected delivery date from the embryo transfer date and embryo age. Day-3, Day-5 and Day-6 transfers use different dating offsets, so select the embryo stage used for your transfer.

What is an IVF Due Date Calculator?

An IVF due date calculator is an educational planning tool that estimates an expected delivery date using an embryo transfer date and embryo age. It can help intended parents understand pregnancy timing after an IVF or frozen embryo transfer.

The calculation is an estimate and does not replace obstetric ultrasound or clinician dating.

IVF Due Date Calculator

IVF Due Date Calculator | EggDonors4All

Transfer date Enter the date the embryo transfer occurred.

Embryo age

Transfer type Transfer type is displayed with your result for planning context.

Calculation assumptions

Day-3 embryo: transfer date + 263 days
Day-5 embryo: transfer date + 261 days
Day-6 embryo: transfer date + 260 days
The result is an estimated date, not a medical diagnosis.

Estimated Due Date

—

This is an estimated delivery date based on the selected embryo age and transfer date.

Transfer Date —

Embryo Age —

Transfer Type —

Estimated Gestational Age at Transfer —

Pregnancy Milestone Dates

12 Weeks —

20 Weeks —

28 Weeks —

37 Weeks —

Important dating note

Estimated dating does not replace obstetric ultrasound or clinician dating. Your fertility or obstetric care team may use additional clinical information when establishing or confirming pregnancy dating.

How the IVF Due Date Calculation Works?

The calculator uses the embryo transfer date together with the developmental age of the embryo. The dating offset changes depending on whether the embryo was transferred on Day 3, Day 5 or Day 6.

Day-3 embryo: transfer date + 263 days
Day-5 embryo: transfer date + 261 days
Day-6 embryo: transfer date + 260 days
These are the calculation assumptions used by this calculator. The result is intended for educational planning.

What Can Change the Result?

The estimated date depends on the transfer date and embryo age selected in the calculator. Selecting the wrong embryo stage or entering an incorrect transfer date can change the calculated result.

Clinical dating may also differ from a calculator estimate. Ultrasound findings and the dating assessment made by your clinician should be used for medical care.

How to Interpret Your IVF Due Date?

The result gives an estimated delivery date based on the information entered. It is useful for pregnancy planning and understanding approximate pregnancy milestones.

It should not be used to diagnose pregnancy, determine fetal health, or replace medical dating provided by your fertility or obstetric care team.

Planning Your Donor-Egg Journey

EggDonors4All provides educational resources and donor-egg planning tools for intended parents. If you are exploring donor eggs as part of your family-building journey, you can learn more about available pathways and connect with the agency.
EggDonors4All is an egg donor agency and is not a fertility clinic. IVF procedures, embryo transfer and individualized medical decisions are handled by licensed fertility clinics.

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Frequently Asked Questions

Q. How is an IVF due date calculated?

Ans. The estimated due date is calculated from the embryo transfer date and embryo age. This calculator uses +263 days for Day-3 embryos, +261 days for Day-5 embryos and +260 days for Day-6 embryos.

Q. Does embryo age affect the IVF due date?

Ans. The calculator uses a different dating offset for Day-3, Day-5 and Day-6 embryos, so selecting the correct embryo age is important for the estimate.

Q. Can I use this calculator for a frozen embryo transfer?

Ans. Yes. The calculator includes both fresh and frozen transfer as selectable transfer types. The transfer type is displayed as part of the planning result.

Q. Is the IVF calculator due date exact?

Ans. No. The calculator provides an estimated date. Estimated dating does not replace obstetric ultrasound or clinician dating.

Q. What should I do if my clinician gives me a different due date?

Ans. Discuss the difference with your fertility or obstetric care team. Clinical dating and ultrasound assessment should guide medical care rather than relying on an educational calculator alone.

Sources & Methodology

This calculator follows the dating methodology specified for the EggDonors4All IVF / FET / Day-5 Embryo Due Date Calculator.

Methodology review date: September 2026

Calculator version: 1.0

Medical and numeric assumptions should be reviewed by the designated medical reviewer before production publication.

EggDonors4All is an egg donor agency and is not a fertility clinic. IVF procedures, embryo transfer and individualized medical decisions are handled by licensed fertility clinics.

Explore More Fertility Calculators

Looking for another fertility planning tool? View all fertility calculators from EggDonors4All.

Have Questions About Donor-Egg Family Building?

Explore EggDonors4All’s donor-egg pathway and speak with the agency about available educational resources and next steps.

Important: This calculator is an educational planning tool and is not medical advice, diagnosis or treatment. It does not predict an exact pregnancy outcome or replace advice from a licensed healthcare professional. EggDonors4All is an egg donor agency and does not perform IVF, egg retrieval, embryo testing or embryo transfer. Medical procedures and individualized treatment decisions are handled by licensed fertility clinics.

Egg donation is a process where a woman (the egg donor) provides one or several eggs (also known as oocytes) for purposes of assisted reproduction, with the eggs being fertilized in the laboratory. Once fertilized, the resulting embryos are transferred to the recipient’s uterus to initiate a pregnancy, or they can be cryopreserved (frozen) for future use.

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