Calculate your estimated due date from IVF embryo transfer date, including key pregnancy milestones.
IVF due dates differ from natural conception. The formula adjusts based on embryo age at transfer:
This equals 280 days from a theoretical Last Menstrual Period (LMP).
You may also find our Due Date Calculator useful for tracking natural conception timelines. For pregnancy nutrition, see our Calorie Calculator. You might also find our BMI Calculator helpful for monitoring health during pregnancy.
Enter your embryo transfer date and select Day 3 or Day 5 transfer type. Day 5 blastocyst: Due date = Transfer date + 261 days. Day 3 transfer: Due date = Transfer date + 263 days. Both equal 280 days from a theoretical LMP.
A Day 5 blastocyst transfer gives a due date 261 days after transfer. A Day 3 transfer gives a due date 263 days after transfer — 2 days later, because the embryo is younger at transfer.
Yes. Since the exact fertilization date is known, IVF due dates are typically more accurate than natural conception estimates. However, due dates are still estimates — only about 5% of babies arrive exactly on their due date.
Yes. This calculator uses the same standard medical formulas used by Flo, Ovia, and other IVF apps. Enter your Day 3 or Day 5 transfer date to instantly get your estimated due date — no account or sign-up needed.
Many couples wait until after the first trimester (12 weeks) when miscarriage risk drops significantly. Consider sharing a two-week window rather than an exact date to manage expectations.