IVF Due Date Calculator

In natural conception, the exact day of fertilization is unknown. In IVF, the date is precise, allowing for a more accurate calculation than using the last period (LMP).

On the day of a 5-day transfer, you are considered technically 2 weeks and 5 days pregnant.

A fresh transfer happens days after egg retrieval. A frozen embryo transfer (FET) uses cryopreserved embryos from a previous cycle. Both use the same due date formula based on embryo age at transfer.

On the day of a 5-day blastocyst transfer, you are considered 2 weeks and 5 days pregnant. On the day of a 3-day transfer, you are 2 weeks and 3 days pregnant. This accounts for the 14-day convention added to align IVF dating with LMP-based gestational age.

Yes. Because the exact date of fertilization (or transfer) is medically documented, IVF due dates are typically the most precise available. LMP-based dating assumes a standard 28-day cycle with ovulation on day 14, which may not match every individual.

No. This calculator provides standard IVF dating estimates for educational planning. Your fertility clinic will provide an official due date based on your specific treatment protocol. Always follow your healthcare provider's recommendations.

Yes, embedding the IVF Due Date Calculator is free. Hit the "Embed" button on this page, adjust the width, height, and theme, then grab the iframe code. It works on WordPress, Wix, Squarespace, Shopify, and plain HTML pages. No registration needed. Full instructions at calculory.com/services/embed-calculators.