DueDateCalculator.ai

Pregnancy timing

IVF Due Date Calculator

Calculate your due date from your embryo transfer date and the embryo’s age at transfer.

Your details

The day of your embryo transfer.

Calculated on your device. Your dates are never sent or stored.

Enter your details to see your estimate. Every result is an estimate — your clinician sets the official due date.

How it works

Because the embryo’s age is known exactly, IVF dating is more precise than estimating ovulation from a cycle. The due date counts forward from the transfer, adjusted for how many days the embryo had already developed.

See the full methodology and pregnancy term definitions on the main page.

The formula
due date = transfer + 266 − embryo ageday-5 blastocyst = transfer + 261 days

More calculators

Due Date CalculatorEstimate your due date from your last period, conception, or IVF transfer. Conception Date CalculatorEstimate the day you likely conceived and your fertile window. Pregnancy Week CalculatorSee how far along you are in weeks and days. Reverse Due Date CalculatorWork back from a due date to your last period and conception. Gestational Age CalculatorGestational age for any date you choose.