FET Due Date Calculator - IVF Dates

Estimate an IVF/FET pregnancy due date, gestational age, trimester, and weeks remaining from a frozen embryo transfer date.

Use the date the frozen embryo transfer was completed or is planned.
Select the embryo development day at transfer.
Used for gestational age, trimester, and time remaining.
Used only as note context, not as a predictor of outcome.
Estimated due date
Not calculated yet

Enter your transfer details and calculate to see your estimated IVF due date.

Gestational age --
Pregnancy week --
Trimester --
Time to due date --
LMP-equivalent date --
Fertilization-equivalent date --
Transfer summary will appear here after calculation.

Breakdown

Formula used: estimated due date = transfer date + (266 - embryo age) days.

  1. Select an embryo age to set the IVF/FET due date offset.
  2. Enter a transfer date and calculation date.
  3. Calculate to see the estimated due date and timeline.

Notes

Single or multiple embryo transfer selection is included only as context and does not predict pregnancy outcome or delivery timing.

This calculator provides date estimates only and is not medical advice. IVF timelines can vary by clinic, transfer protocol, embryo details, and individual care plan. Confirm dates with your fertility clinic or healthcare professional.

What Is FET Due Date Calculator?

A helpful planning guide for understanding frozen embryo transfer timelines, estimated due dates, and key pregnancy milestones.

Frozen Transfer Date Insight

Estimate an expected due date based on the embryo transfer date and embryo age used in a frozen embryo transfer cycle.

Explore timeline details

Embryo Age Awareness

The calculation can reflect whether a day 3, day 5, or day 6 embryo was transferred for a more relevant estimate.

Understand embryo timing

Pregnancy Milestone Guide

See how the transfer date connects with common pregnancy checkpoints, from early testing windows to trimester planning.

View milestone context

Simple Date Planning

A FET Due Date Calculator turns complex fertility timing into a clear estimated date that is easier to understand.

Plan with clarity

Clinic Conversation Support

Use the estimate as a starting point for informed conversations with your fertility clinic or pregnancy care provider.

Prepare better questions

IVF-Friendly Calculation

Unlike standard pregnancy wheels, this approach is built around embryo transfer timing rather than a last menstrual period.

Use IVF-specific context

Clear Estimated Results

The goal is to provide a practical estimate that helps users organize appointments, reminders, and next steps.

Organize your dates

Helpful, Not Diagnostic

The calculator is an educational planning resource and should always be interpreted with professional medical guidance.

Use as a guide

Why Use FET Due Date Calculator?

It gives fertility patients and families a clearer way to prepare for appointments, testing windows, and pregnancy planning.

More Relevant Than LMP

FET cycles often need transfer-based timing, making this calculator more useful than a standard due date method.

Appointment Planning

Estimated dates can help users prepare for scans, follow-up visits, and important fertility clinic conversations.

Less Guesswork

A structured estimate reduces confusion around early pregnancy timing after frozen embryo transfer.

Family Preparation

Knowing an estimated due date helps families think ahead about schedules, support, work planning, and care needs.

Better Timeline Context

The calculator connects the transfer date with pregnancy progression in a way that feels easier to follow.

Quick Reference

Users can return to the estimate whenever they need a simple reference point for planning or reassurance.

Supports Medical Guidance

It does not replace a provider, but it can help users understand the dates their care team may discuss.

Calmer Planning Experience

Clear timing can make the process feel more organized during a stage that often comes with many moving parts.

How to Use FET Due Date Calculator?

Follow a simple process to estimate your due date and understand the result in the context of fertility care.

01

Enter Transfer Date

Start with the exact date your frozen embryo transfer took place, as this is the foundation of the estimate.

02

Select Embryo Age

Choose the embryo development stage, such as day 3 or day 5, so the calculator can align timing more accurately.

03

Calculate the Estimate

Use the entered details to generate an estimated due date based on common IVF pregnancy dating methods.

04

Review Pregnancy Weeks

Look at how the estimated due date relates to pregnancy weeks, early milestones, and upcoming care moments.

05

Note Important Dates

Record helpful reference dates for testing, scans, personal reminders, and conversations with your clinic.

06

Confirm With Your Provider

Share or compare the estimate with your fertility specialist or pregnancy care provider for medical confirmation.

07

Update If Needed

If your clinic provides revised dating from ultrasound or clinical review, use that guidance as the main reference.

08

Plan With Confidence

Use the final estimate to stay organized while remembering that pregnancy dating is best confirmed by your care team.

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