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Pregnancy Due Date Calculator: Know When to Expect

If you’ve recently discovered you’re pregnant, it’s normal to have mixed emotions and questions. Knowing your due date can help you explore options and plan ahead. While the most accurate way to determine your due date is through a pregnancy ultrasound, there are other ways to estimate your due date.

Use our online Pregnancy Calculator tool below by plugging in the first day of your last menstrual period to determine your approximate due date:

Pregnancy Calculator

Due Date, Conception Date Calculation Results:


Please note that the date calculated above is an estimate based on an average cycle of 28 days.

Pregnancies typically last about 40 weeks, but of course each one is unique. Babies tend to arrive when they’re ready. Understanding this can help you adapt and ease any undue stress as your due date approaches.

If you are in need of an ultrasound, First Choice offers free ultrasounds to eligible clients. Call 973-538-0967 or send a text to 973-840-8924 to determine if you are eligible to schedule a free ultrasound. 

How a Due Date is Calculated

Determining your due date might seem complicated, but it’s actually quite straightforward. The calculation typically starts from the first day of your last menstrual period (LMP) (although conception usually occurs around two weeks later).

Here are some terms you might hear related to your due date: 

  • Last Menstrual Period: Keeping a record of your menstrual cycles can significantly improve the accuracy of your due date estimation. This is especially useful if you have irregular cycles, as it helps both you and your healthcare provider pinpoint your pregnancy timeline more precisely.
  • Gestational Age: This term refers to the length of your pregnancy, which is measured from your LMP rather than the actual conception date. This calculation assumes a 28-day menstrual cycle, which is common for many women.

Learning Your Due Date and Confirming Your Pregnancy

If you’re experiencing pregnancy symptoms, but haven’t taken a pregnancy test yet, this is your first step. Once you’ve tested and confirmed your pregnancy, you’ll want to schedule a pregnancy ultrasound to validate your pregnancy test results and to determine your due date. An ultrasound provides a more accurate timeline and ensures you receive the right care and have the most accurate understanding of what options are available to you. 

First Choice offers free pregnancy testing and free pregnancy ultrasounds to eligible clients. See our list of locations to find a location near you and to schedule your free appointment.

Exploring Your Options

If you’ve confirmed your pregnancy and are uncertain about whether you’d like to continue your pregnancy, you’re not alone. We provide free options consultations to discuss all of your options, including abortion, the abortion pill, and alternatives, in a confidential and supportive environment. 

Our goal is to offer accurate information and compassionate guidance to empower women to make the choice that is right for them. Your choices matter, and we are here to support you.

Schedule an appointment and start getting pregnancy help today.

Schedule An Appointment

If you think you could be pregnant, please come in for a pregnancy test and to receive information about your options. All of our services are free of charge.

Pregnancy tests are the only service that can be scheduled online. STD screens and ultrasounds must be scheduled via phone or text.

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