Pregnancy Due Date Calculator

Calculator to find out your baby’s gestational age.

Calculation Method

Estimated date of last menstruation:

Probable conception date:

Enter the estimated date of delivery:

Gestational age today:

Important Events and Pregnancy Ultrasound Examinations

Date	Gestational Age	Event
		First day of last mentrual period (LMP)
	2 weeks	Probable conception date
	5 weeks	The gestational sac is visible on ultrasound.
	7 weeks	Embryo is visible on ultrasound, you also can hear the heartbeat.
	8 weeks	It is already possible to know the baby's gender by means of blood test.
	13 weeks	Best time to Nuchal Translucency Screening exam.
	16 weeks	If it was not possible to see the sex of the baby at 13 weeks it is now quite safe to identify the baby' gender.
	20 weeks	Usually at this stage, the mother begins to notice the baby's movements
	22 weeks	Best time to do the second trimester Morphological Examination and measure the cervix to prevent preterm labor .
	24 weeks	If you want to do a 3D / 4D ultrasound from here onwards is a favorable season (up to about 29 weeks)
	27 weeks	At that time the baby's hair starts to growth
	28 weeks	Ideal time to take the fetal echocardiography test
	29 weeks	The best 3D / 4D images are obtained up to 29/30 weeks, if you have not yet taken this exam run
	32 weeks	Now it's time to assess fetal vitality with the Fetal Biophysical Profile and Dopplervelocimetry
	34 weeks	If a premature birth occurs from now on the chances of the fetus surviving are very good and with little chance of complications
	37 weeks	Your baby is no longer premature, great news if he wants to be born from now on
	39 weeks	Best time to book a elective cesarean section, if this is your wish
	40 weeks	This is the likely date of delivery (the day you turn 40 weeks old)
	41 weeks	If you get this far, this week most pregnancies are stopped electively, either by induction or by cesarean section
	42 weeks	This is the upper limit of a normal pregnancy, hereinafter we call it a prolonged pregnancy

Are you pregnant and trying to figure out when your baby is due? Our easy pregnancy due date calculator can help! This calculator is simple to use and can give you an estimate of when your little one will be arriving. Just enter the date of the first day of your last period, as well as the average length of your menstrual cycle, and our calculator will do the rest!

What is my estimate due date?

If you’re like most pregnant women, you probably can’t wait to find out when your baby is due. After all, pregnancy is an exciting time!

The estimated due date (EDD or EDC) is the date that spontaneous onset of labor is expected to occur. The due date may be estimated by adding 280 days ( 9 months and 7 days) to the first day of the last menstrual period (LMP). This

The problem with using the LMP to estimate the due date is that not all women have a 28-day menstrual cycle or even know when their last period was. That is why we developed the pregnancy due date calculator.

Sometimes an ultrasound scan during pregnancy can give a more accurate picture of how far along in pregnancy you are.

How to use the Gestational Calculator?

Our online gestational age calculator allows you to calculate how many weeks your baby is in three different ways. The easiest way to use the gestational calculator is to simply enter the first day of your last menstrual period. If you don’t know when the first day of your last period was, you can use these other ways:

Estimated Due Date (EDD or EDC): when you are not sure about your period and you had an ultrasound you will be informed of your due date. Entering your due date in our calculator will give you an accurate gestational age.

Last Menstruation Period (or LMP): this is the most commonly used parameter, the first day of the last period. With information we can understand your menstrual cycle and determine all the important events of your pregnancy.

Ultrasound: use this if you don’t know when your last menstrual date was or when your probable delivery date is. The ultrasound will help determine the gestational age of your baby. You will have to know the exact date when the ultrasound was taken and the gestacional age at that day.

After you enter one of these three pieces of information, our calculator will give you an estimated due date and gestational age for your pregnancy. You can also use this calculator to find out how far along you are in weeks or days! Simply enter the date of your last period.

How accurate is due date from first day of last period?

The due date calculated from the first day of your last period is usually accurate to within a week. However, it’s not as accurate as an ultrasound scan at dating how far along in pregnancy you are.

Why is knowing my due date important?

Your due date is important because it helps your healthcare provider know when your baby is likely to be born. This information can help them plan for your care and make sure you have a healthy pregnancy.

It is also important to know your due date if you are planning on having a baby. This way, you can be sure to get pregnant when you want to!

If you’re not sure about your due date, our easy-to-use calculator can help! Just enter the date of the first day of your last period, as well as the average length of your menstrual cycle, and our calculator will do the rest.

Is due date always 40 weeks?

No, the due date is not always 40 weeks. The length of pregnancy can vary by a few weeks. This is because the date of ovulation (when the egg is released from the ovary) can vary from one woman to the next.

I don’t understand how to calculate gestational age in weeks, maybe in months?

No, the technically correct way to calculate gestational age is in weeks. Using months is a lay and very inaccurate way to count your pregnancy time. Months do not have the same number of days. Yes, it is only 1 day apart from one month to the next, but that added to 9-10 months gives a considerable difference. Furthermore, if we say that someone is in the 7th month, there is a very big difference between the beginning and the end of the 7th month. Therefore, there are several reasons to count gestational age in weeks rather than months. If you are having trouble understanding how this happens we have prepared two very cool posts on the subject and we recommend that you read as soon as possible:

How is Gestational Age (Duration of Gestation) calculated?

Gestational Age in Months

I’m still trying to get pregnant… how do I do it?

In this case you don’t need the gestational calculator, but the Fertile Period Calculator . With it it is possible to inform some characteristics of your menstrual cycle to know what is the probable day of your ovulation. This makes it possible to determine the period when your chances of becoming pregnant are greatest.

We hope this article was useful in helping you understand a little more about gestational age, how it is calculated and why it is important. If you have any questions or comments please let us know! We love hearing from our readers!

Happy calculating! :)”`