Embryo Transfer Calculator

Free Embryo Transfer Calculator

Use this free embryo transfer calculator to estimate the key milestones of your IVF or FET (frozen embryo transfer) cycle. Enter your transfer date and whether your embryo was a day 3 or day 5 transfer to see your estimated retrieval date, implantation window, beta hCG test date, and due date.

Because IVF timelines are based on a precisely known fertilization date rather than an estimated ovulation date, these milestones tend to be more predictable than in a natural cycle. Your clinic's exact protocol may vary slightly, so always confirm testing and monitoring dates with your fertility team.

How to Use the Embryo Transfer Calculator

• Select your embryo transfer date.
• Choose whether your embryo was transferred on day 3 or day 5.
• Click Calculate My Milestones.
• View your estimated retrieval date, implantation window, beta hCG test date, and due date instantly.

Features

• Estimates your retrieval date automatically from your transfer date.
• Shows your expected implantation window.
• Calculates your likely beta hCG blood test date.
• Estimates your due date using standard clinical IVF dating conventions.

Frequently Asked Questions

How is my due date calculated after an embryo transfer?

IVF due dates use your known embryo transfer date instead of an estimated ovulation date. For a day 5 blastocyst transfer, 261 days are added to the transfer date. For a day 3 transfer, 263 days are added, since the embryo is two days younger.

What is the difference between a day 3 and a day 5 transfer?

A day 3 embryo is at the cleavage stage, with about 6-8 cells. A day 5 embryo has developed into a blastocyst, a more advanced stage with a higher chance of implantation per embryo. Your clinic decides which day suits your specific embryos and situation.

When should I take a beta hCG pregnancy test?

Most clinics schedule a blood beta hCG test around 9 to 11 days after a day 5 transfer, or 11 to 14 days after a day 3 transfer. Testing too early can give a false negative, so always follow your clinic's specific instructions.

Is this calculator accurate enough for medical decisions?

No. This calculator provides general estimates based on standard clinical conventions. Your fertility clinic will confirm your exact milestones and due date, typically with blood tests and an early ultrasound.

Related Calculators

Want a due date estimate from either your transfer or retrieval date? Try our IVF due date calculator. Tracking days past transfer and your beta hCG test? Use the IVF transfer calculator. Wondering when implantation happens? Check the implantation calculator. Already have your due date? Try the pregnancy week calculator. Want to know your trimester? Use the pregnancy trimester calculator.