Due Date Calculator

You’re pregnant! Is your baby due soon? Use this pregnancy calculator to find out what day your baby will be born. Just input the date of your last menstrual period, and you will get a lot of information, such as date of conception, foetal Age, estimated due date and much more.



Enter the date of the first day of your last menstrual period (LMP):



Probable date of conception:


Foetal Age Today:


Best date range for NT scan:


(12 weeks 3 days to 13 weeks 3 days)

Morphology Scan Date:


(19 weeks)

First Heart Tones by Doppler:


(11 to 12 weeks)

Best time to evaluate cervical length in patient with risk factors:


Best time for routine anatomy ultrasound:


(18 to 20 weeks)

Estimated Due Date:



Using the due date calculator

To find the due date, input the first day of your last menstrual period. Then choose the calculate the due
date’ option. Depending on the start of your last menstrual period, pregnancy lasts from 37 weeks to
42 weeks…

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How is the due date calculated?

Many options for calculating the due date exist. Counting 38 weeks from the day you conceived can help you figure out the due date. However, only a small section of expected mothers knows when they exactly

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How likely may I give birth on the due date?

Obviously, the calculation of your due date is approximate. Whether you seek info about the date from your doctor or use our due date calculator, you can’t get the exact date…

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Is it possible to plan the due date?

Yes, you can do so. Whether you’re a teacher who wants to maximize the time with your little one or intend to avoid getting pregnant in the midst of the summer season, you may plan the due date.

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Can the due date change?

Of course, your due date is likely to change. That’s not a worrying fact. Your doctor might change the date
for various reasons while your pregnancy progresses…

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3 Techniques to Calculate the Due Date

Conception Date

Finding the due date in accrdance with the last menstrual period’s Finding the due date in accordance with the last menstrual period’s first day is better for those with a regular menstrual cycle.What if your menstrual period is irregular?
If so, then this method may not work well for you. You may want to try our date calculator or the options.

Since an estimated delivery date is important, you and/or your doctor may use conception in case you remember it. Simply add 266 more days to the day to get the approximate estimated date.

IVF Transfer Date

Over 260,000 assisted-reproductive technology cycles are performed every year in the US alone. That means around 77,000 babies get born each year. In case you’re a part of the IVF (in vitro fertilization) moms, you may effortlessly calculate the due date. Just use the IVF transfer date for the task.

Ultrasound Scan Technique

Even if you forget your last menstrual period day, can’t pinpoint when you conceived, or are unsure when ovulation took place, other clues might help you determine the due date during your first prenatal appointment as mentioned below. For that, you don’t need to use the due date calculator. An early ultrasound can precisely date your pregnancy. The sad part is not all ladies can use the early ultrasound option. Some doctors perform ultrasounds routinely. However, most practitioners only use this option if you’ve irregular menstrual periods, are over 35 years, or have a history of pregnancy complications or miscarriages. Your practitioner may also recommend this method if your due date can’t be calculated based on your last menstrual period or physical exam.

  • Pregnancy signs such as the hearing of the first heartbeat of the baby (around the 9th or 10th week) and when you first observed fetal movements (that averages around 18 to 22 weeks) can indicate when the due date might be.
  • Your fundal height measurement by a practitioner could also help to find the due date. The doctor may check the measurement during each visit and may suggest an approximate due date.
  • Your uterus size noted during your physical examination could also signify the estimated time. Here, you don’t have to use a due date calculator.

The start of your pregnancy journey

Once you calculate the date, you may know when to expect the little baby and plan accordingly.

If you didn’t take the above steps on calculating the date, fix an appointment with your doctor. The practitioner will carry out pregnancy tests and other physical exams to establish the due date.

During each visit, the practitioner will examine your uterus size.
Plus, the development of the unborn will be monitored. Signs such
as hearing your baby’s first heartbeat or seeing the unborn in ultrasound can be a thrilling scene. Depending on the observations, the due date might be adjusted.

While the doctor will advise you the best, you can do many other chores when you get pregnant. Explore our due date calculator and the rest of the website to find out more.