IVF Due Date Calculator
Precise EDD from embryo-transfer date and embryo age — the one pregnancy where dating is exact.
IVF removes all dating uncertainty — fertilisation day is known to the hour, so a day-5 transfer adds exactly 261 days. Clinics use precisely this arithmetic; ultrasound 'redating' is rarely appropriate in IVF pregnancies because the embryonic age cannot be wrong.
Formula
For general information only. Pregnancy and infant care decisions must be guided by your treating clinician or midwife — always defer to their assessment.
Precise EDD from embryo-transfer date and embryo age — the one pregnancy where dating is exact. The IVF Due Date Calculator is a free, private ivf due date tool — every result computes instantly in your browser with no sign-up and no data upload.
About IVF Due Date Calculator
IVF removes all dating uncertainty — fertilisation day is known to the hour, so a day-5 transfer adds exactly 261 days. It applies EDD = transfer date + (266 − embryo age in days). Use the IVF Due Date Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use IVF Due Date Calculator
- 1Enter your details in the IVF Due Date Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use IVF Due Date Calculator?
- ✓Instant ivf due date result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (ACOG CO 700 — ART pregnancy dating)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the IVF Due Date Calculator work?+
IVF removes all dating uncertainty — fertilisation day is known to the hour, so a day-5 transfer adds exactly 261 days. The calculation uses the formula: EDD = transfer date + (266 − embryo age in days). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the IVF Due Date Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources: ACOG CO 700 — ART pregnancy dating. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the IVF Due Date Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is informational only. Always defer to your treating clinician or midwife for pregnancy and infant care decisions.
What can I use the IVF Due Date Calculator for?+
It's commonly used for ivf due date, embryo transfer due date, fet due date. Precise EDD from embryo-transfer date and embryo age — the one pregnancy where dating is exact.
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