IVF Due Date Calculator

Find your IVF due date from the embryo transfer date and embryo age (day 3, 5 or 6), the egg retrieval date or an IUI date. Example: a day-5 embryo transferred on March 10, 2026 gives a due date of November 26, 2026.

How to use the IVF Due Date Calculator

1. Enter the values in the fields.
2. Press Calculate to see the result with the steps shown.

Formula and method

IVF due date = transfer date + (280 – 14 – embryo age) days. Day-3: +263, day-5: +261, day-6: +260 days. From retrieval or IUI: +266 days.

Days to add by method

Example due dates for a transfer on March 10, 2026

Frozen versus fresh transfers

The calculation is the same: the age of the embryo at transfer decides the due date, not whether it was frozen.

When to expect early scans

A pregnancy test about 9 to 14 days after a day-5 transfer, then hCG checks and an ultrasound around 6 to 7 weeks. This calculator is for education and is not medical advice. Your own doctor, midwife or pediatrician should guide decisions about your care.

Frequently asked questions

How is an IVF due date calculated?

Add 261 days to a day-5 transfer date, or 263 days to a day-3 transfer.

Is it more accurate than an LMP date?

Yes, because the conception date is known.

Does frozen embryo transfer change it?

No.

What if I used a donor egg?

Use the embryo age and transfer date.

Will my due date change?

Your clinic may adjust it after ultrasound.

How early can I test after transfer?

Clinics usually advise a blood test 9 to 14 days after a day-5 transfer.

Sources

• ACOG: Methods for estimating the due date
• CDC: Assisted reproductive technology

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• Due Date Calculator
• Gestational Age Calculator
• Conception Calculator
• Implantation Calculator
• Pregnancy Test Calculator

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