Pregnancy Due Date Calculator

Calculate estimated due date (EDD) and gestational age based on :

Conception date
(date of ovulation, egg retrieval, or insemination)
Date of 3-day embryo transfer
Date of 5-day embryo (blast) transfer
Due date by sonogram (reverse calculation)
First day of last menstrual period


Pregnancy Due Date Calculator

Introduction to Pregnancy Due Date Calculation

Estimate your delivery date and prepare for the new arrival with our Pregnancy Due Date Calculator.

How the Calculator Works

Input your starting point: conception date, embryo transfer date, sonogram due date, or LMP to calculate your estimated due date.

Calculating Your Due Date

Using the first day of your last menstrual period:

\[ \text{EDD} = \text{LMP} + 280 \, \text{days} \]

Using the Calculator

  1. Select your calculation basis.
  2. Input the relevant date.
  3. Discover your estimated due date.

FAQs about Pregnancy and Due Dates

How do I calculate my due date for pregnancy? Enter the first day of your LMP into the calculator.

Which week is best for delivery? Deliveries between 39 and 40 weeks are ideal for the baby's health.

Are baby due dates exact? Due dates are estimates, with only about 5% of babies born on their exact due date.

Should I go by LMP or ultrasound due date? Ultrasound can offer more accuracy, especially in the first trimester.