Fertility Tool

IVF Due Date Calculator

Calculate your expected due date from your IVF embryo transfer date. Works for both Day 3 cleavage-stage and Day 5 blastocyst transfers.

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IVF Due Date Calculator

Estimated Due Date (EDD)
Equivalent LMP Date

Confirm with your reproductive endocrinologist and first ultrasound.

How IVF Due Date Calculation Works

IVF due date calculation differs from natural conception dating because fertilization occurs in the laboratory on a known date. Embryo transfer occurs 3 or 5 days after egg retrieval and fertilization.

  • Day 5 blastocyst transfer: Due Date = Transfer Date + 261 days
  • Day 3 embryo transfer: Due Date = Transfer Date + 263 days

Understanding the Equivalent LMP Date

To standardize dating with your OB-GYN's system (which uses LMP), an equivalent LMP date is calculated. This is 14 days before your estimated ovulation/retrieval date, allowing your pregnancy to be managed using standard gestational age charts.

IVF Pregnancy Management

Your reproductive endocrinologist typically manages care until 8–10 weeks (after confirming heartbeat and fetal development), then transfers care to your OB-GYN. IVF pregnancies are considered higher risk for multiples and are often monitored more closely in early weeks.

Medical Disclaimer: This tool is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalized guidance.

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