What is My Expected Date of Delivery?

April 23, 2025 3 min read

Finding out you're pregnant is an exciting time, and one of the first things you'll likely want to know is: "When is my expected date of delivery?" Also known as your estimated due date (EDD), this date helps you and your healthcare provider track your pregnancy and prepare for your baby's arrival.

Find Your Expected Delivery Date!

Use our pregnancy calculator to easily estimate your due date and track milestones.

Calculate Your Due Date Now! →

While only a small percentage of babies are born exactly on their due date, it's a useful milestone to anticipate. Our Pregnancy Calculator & Ovulation Estimator can help you determine this important date and more!

How to Calculate Your Expected Date of Delivery

Several methods can be used to estimate your due date. Here are some common approaches:

  • Last Menstrual Period (LMP): This is the most common method. It involves counting 40 weeks (280 days) from the first day of your last menstrual period. This assumes a 28-day cycle.
  • Conception Date: If you know the exact date you conceived, you can add 266 days to that date.
  • IVF Transfer Date: For pregnancies achieved through in vitro fertilization (IVF), the transfer date is used for a more precise calculation.
  • Ultrasound: An early ultrasound, typically performed in the first trimester, can accurately estimate gestational age and thus, your due date.

Our Pregnancy Calculator & Ovulation Estimator can help you easily calculate your due date using any of these methods!

Using the Pregnancy Calculator & Ovulation Estimator

Our tool offers comprehensive functionality to help you throughout your reproductive journey. Here's how to use it:

  • Pregnancy Calculator:
    • Enter the first day of your last menstrual period (LMP), your conception date, or a known due date.
    • The calculator will determine your estimated due date, current trimester, and key milestones.
  • Ovulation Estimator:
    • Enter the length of your typical menstrual cycle.
    • The estimator will pinpoint your fertile window and ovulation day.

The interactive six-month calendar color-codes your period days, fertile window, and peak ovulation day for easy planning.

Factors Affecting Your Due Date

While calculators provide an estimate, several factors can influence the actual date of delivery:

  • Cycle Length: Women with cycles longer or shorter than 28 days may have a slightly different ovulation and conception timeline.
  • Irregular Periods: If your periods are irregular, an early ultrasound is often the most accurate way to determine your due date.
  • First-Time Pregnancy: First-time pregnancies tend to be slightly longer on average.
  • Multiple Pregnancies: Women carrying twins or more are more likely to deliver earlier.

Why is Knowing My Expected Date of Delivery Important?

Knowing your EDD is crucial for several reasons:

  • Prenatal Care: It helps schedule timely prenatal appointments and screenings.
  • Tracking Development: You can track your baby's growth and development week by week.
  • Planning: Knowing your EDD allows you to plan for maternity leave, childcare, and other essential preparations.
  • Managing Expectations: It provides a timeframe for understanding potential labor and delivery scenarios.

Final Thoughts

Calculating your expected date of delivery is a significant step in your pregnancy journey. Our Pregnancy Calculator & Ovulation Estimator is designed to provide you with a personalized timeline and valuable insights. Remember to consult with your healthcare provider for a confirmed due date and comprehensive prenatal care. Use our tool to track your pregnancy or pinpoint your most fertile days!