Due Date Calculator

Are you pregnant and looking to determine your due date?

 Booking an appointment for an Ultrasound at an Obria Medical Clinic with the help of a practitioner will always be the most accurate way to determine your due date. In the meantime, feel free to use the Clearblue Due Date calculator below for a rough estimate of when you can expect to meet your little one!



The Clearblue Due Date Calculator

Due Date Calculator
When did your last period start?
Generally, how long are your cycles?
Calculate your due date
Your baby is likely to be born on or around*
*Only your physician can accurately determine your due date or the date of your conception based on his/her knowledge of your complete medical condition.
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In partnership with Clearblue®.

How are Due Dates calculated?

Your due date is typically calculated by identifying the date of the first day of your LMP (Last Menstrual Period) and adding 40 weeks (about 9 months) onto that date.1 

How does the Clearblue Due Date Calculator work?

The Clearblue Due Date calculator works similarly, but slightly different. 

Their calculator asks for the first day of your Last Menstrual Period and the average length of your cycle to estimate the date of ovulation. It asks for these details because a woman can only become pregnant within 24 hours of ovulation due to the short lifespan of the egg if not fertilized by a sperm. As a result, the date of ovulation is an excellent predictor of the day conception took place. From that date, a due date can be projected out.2 




While the Clearblue Due Date is a great resource, if you believe you could be pregnant we highly recommend you book an appointment for Ultrasound at an Obria Medical Clinic for the following reasons: 

Pregnancy Confirmation

Are you 100% certain that you are pregnant? If you have any doubt regarding your result, it’s best to confirm with medical professionals.

At home tests can leave room for error, but urine or blood tests administered by a medical practitioner will have more accuracy.

A Low Cost Pregnancy Test and FREE Ultrasound at an Obria will more accurately confirm whether you are pregnant or not, along with additional details.

Ultrasounds are a superior tool.

Ultrasounds with a licensed practitioner provide you with not only more accurate dating, but also important additional details. 

A FREE in-clinic Ultrasound by a licensed technician will provide you not only with a due date but additional important information such as whether your pregnancy is viable, what trimester you are in as well as a first glimpse at your child.

Obtain your official Pregnancy Verification document.

This important document serves as the official proof of pregnancy for employers future medical services you may need.

If you are determined to be pregnant, Obria Medical Clinics also offer Pregnancy Verification. This is an official document for proof of pregnancy for insurance companies, community agencies who provide services, and employers, making it important for you to obtain to receive future care. 

Prenatal Care  

Visiting an Obria clinic will also allow our caring staff to start you off with prenatal care.

We can’t stress enough how important it is to start prenatal care as soon as possible. It’s not just about taking vitamins; it’s about making sure both you and your little one stay healthy and supported throughout this incredible journey. Prenatal care is like having a personal team of experts looking out for you both ensuring your pregnancy progresses how it should.

Additional Due Date Calculators

You've got this & we've got you.

Book an appointment for Pregnancy Testing and Ultrasound at an Obria Medical Clinic near you today!



1. Donaldson-Evans, C. (2023, September 15). Pregnancy due date calculator and conception calculator. What to Expect. https://www.whattoexpect.com/due-date-calculator/#edd

2. Pike, J. (Ed.). (2014, December 8). Due date calculator. Clearblue. https://www.clearblue.com/am-i-pregnant/due-date-calculator