Due Date Calculator

Average number of days in your cycle


Are you pregnant? Do you want to know the conception date of your pregnancy, the date when your baby's heart will beat for the first time, the date when your baby will kick for the first time and all the end dates of your pregnancy trimesters? With the help of our pregnancy due date calculator, you will not only get to know the due date of delivery of your baby but also know your entire pregnancy calendar.

Tell us the first day of your last menstrual period and the average length of your cycle (default is 28 days) and we will tell you your Estimated Date of Delivery (EDD). To learn more about the relevance of due dates and the method of calculating them, click here.

Determining your  Due Date


Getting to know about the estimated due date of the delivery of the baby helps the expectant mother to prepare herself for the childbirth.It also helps her to get prepared mentally, physically as well as financially for the birth of the baby. Along with the expecting mother, her family members can also prepare for the arrival of the baby by keeping the due date in mind.


The most popular and simple way to determine the delivery due date is through the calculation done by using the date of the first day of your last menstrual period and the average length of your menstrual cycle. Now let us find out the other ways through which you can calculate your due date.

Sample Pregnancy Calendar

The estimated date when conception must have taken place.Probable Conception Date

Probable conception date is the date when you must have conceived your baby. The probable conception date is calculated based on your due date.
When the baby's heart beats for the first time.First HeartBeat

As the name suggests the date of the first heart beat is the day when your baby's heart beats for the first time. This date is also calculated based on your due date.
When the baby kicks in the womb for the first time.Quickening :

Quickening is nothing but the first kick of your baby in your womb. One of the ways to calculate the quickening date is with the help of your due date.
The end date of the third month of your pregnancy.First Trimester Ends:

First trimester end date is the date when you will complete the third month of your pregnancy. The estimated date of first trimester end can be calculated using your due date.
The end date of the sixth month of your pregnancy.Second Trimester Ends:

Second trimester end date is the date of completion of the sixth month of your pregnancy. The estimated date of your second trimester end can be determined using your due date.
ConceptionDue Date

The third trimester ends at the end of the ninth month of pregnancy. Your due date is used to determine the date of your third trimester end.

Some ways to calculate your due date:
  • First day of last period
    Most pregnancies last around 40 weeks (or 38 weeks from origination), so ordinarily the most ideal approach to gauge your due date is to tally 40 weeks, or 280 days, from the main day of your last menstrual period (LMP)

    Another approach to do it is to take away three months from the primary day of your last period and include seven days. So if your last period began on April 11, you'd tally back a quarter of a year to January 11 and afterward include seven days, which implies your due date would be January 18.

    This is the manner by which your primary care physician will evaluate your due date — and it's a truly strong objective. Be that as it may, recall: It's similarly as typical to convey up to 14 days prior or after.

  • Origination date
    Computing your due date dependent on the principal day of your last period functions admirably for ladies who have a generally regular menstrual cycle. In any case, if your cycle is unpredictable, the LMP strategy may not work for you.

    Since a dependable evaluated date of conveyance (EDD) is significant, you and your professional can utilize your origination date rather in the event that you recall it. Simply add 266 days to get your evaluated due date.

  • Ultrasound check
    Regardless of whether you can't pinpoint when you imagined, overlook the day of your last menstrual period or aren't sure when ovulation happened, different intimations can support you and your professional decide your due date at your first pre-birth arrangement, including:

    An early ultrasound, which can all the more precisely date the pregnancy. Simply know, be that as it may, that not all women get an early ultrasound. A few professionals perform them routinely, however others possibly suggest one if your periods are unpredictable, you're 35 or more seasoned, you have a background marked by unnatural birth cycles or pregnancy inconveniences, or the due date can't be resolved dependent on your physical test and LMP. Pregnancy achievements, for example, the first run through the child's pulse is heard (around week 9 or 10, however it can fluctuate) and when you first feel fetal development (on normal somewhere in the range of 18 and 22 weeks, yet it very well may be prior or later), can give pieces of information regarding whether your due date is precise. Your fundal stature, which is the estimation from your pubic bone that remains to be worked out top of your uterus, is checked by your professional at each pre-birth visit and affirms your due date. The size of your uterus, which will be noted when your underlying inside pregnancy test is performed, can likewise be a factor in pinpointing the EDD.

Things you need to know about your due date:
  • Would I be able to plan my due date?
    Regardless of whether you're attempting to abstain from being extremely pregnant in summer or are a teacher who needs to boost time off with your little one, you can attempt to time when you conceive so as to "plan" your due date.

    In any case, regardless of whether you're one of the fortunate ones who's ready to get pregnant when she truly needs to, simply recollect that you likely won't have the option to delineate precisely when you'll bring forth the day (or even the week or month!).

  • Could my due date change?
    Indeed, your due date can change. While it's certainly not a reason to stress, your primary care physician may change your due date for various reasons as your pregnancy advances.

    It might be that your periods are unpredictable and your initial ultrasound dating was off, or that your first ultrasound was in the subsequent trimester.

    It could likewise be on the grounds that your fundal stature is irregular, or your degrees of alpha-fetoprotein (AFP), a protein made by the infant, are outside the typical range. Converse with your expert on the off chance that you have any inquiries or concerns.

  • Due date expectation is a flawed science
    Allotting a due date considers a few variables: last menstrual period as an intermediary for the accepted day of ovulation, size of the infant at different stages (evaluated by means of ultrasound). An examination looked at these customary strategies in the instances of almost 20,000 births. The scientists found that exact forecast is fundamentally unimaginable. Despite which technique they used to decide evaluated Date of Birth, the real Date of Birth demonstrated impressive variety between babies (as long as about fourteen days prior, and fourteen days after). Indeed, even with the most punctual ultrasound, between 11–14 weeks when the embryo is lime-sized, the size of said lime seems to fluctuate sufficiently only to botch any level of consistency.

  • Genetic factors can influence your Due Date
    Examinations of mother and father's introduction to the world record versus their infants birth date likewise propose that hereditary qualities assume a significant job in due date forecast. Basically, more quickly developing children get away from trigger sooner than more slow developing infants.

    In any case, is the trigger, child size? or on the other hand size of the rest of the space in the uterus? Appears as though : babies crushed into restricted spaces may pull the trigger prior! Short mothers (>5'3") convey their children very nearly five days sooner than their tall mother partners (>5'6"). Be that as it may, it's not every single genetic impact on infant size – tall or short fathers had zero effect on when the baby showed up. What's more, infants of tall mothers will in general come post due date, recommending that the additional room may slow down infant get away from plans. Organically, uterine stretch may have something to do with when and how the body begins the work procedure.

  • Do Due Dates considerably matter?
    We, as moms and fathers, and any individual who has ever harassed a pregnant lady with the "when are you due?" question expect and ache for consistency. We need a due "date". In any case, past fulfilling the inquisitive neighbor or aunt, there are major implications for placing too much emphasis on a specific date.

    On the off chance that we don't generally have an idea what the genuine development length ought to be for every particular infant, how would we realize who is early, who is late, and who is exactly on schedule?

    Due dates fill a significant clinical need—they give data on when to mediate, speed things along, and understand that infant out. This may happen too soon, before child is prepared. That is terrible. Or then again, it might happen too late That is downright terrible.

    One examination found that girl babies have later evaluated due dates than they most likely should. Thus, girls have a higher danger of going post-term with genuine outcomes. Stressing the need to adjust outcomes of superfluous early intercession with the chance of interceding too late, the specialists on that review propose a straightforward arrangement. They exhort watching out for pregnancies with a more extensive window thought of "post-date" and permit the mother to have a solid voice in the choice about when to intercede.

  • What week of pregnancy are most babies given birth?
    The scientists additionally found that: 10% delivered a baby by 38 weeks and 5 days after the LMP. 25% delivered a baby by 39 weeks and 5 days after the LMP. 50% delivered a baby by 40 weeks and 5 days after the LMP.

  • Do first time moms deliver late or early?
    The outcomes indicated that a firstborn infant has a 15 to 16 percent possibility of being brought into the world late, contrasted to a 9 or 10 percent chance for other children. Most children were delivered at 39 weeks of pregnancy. However, the examination additionally found that firstborns were likewise bound to be brought into the world ahead of schedule, at 37 weeks or prior.

  • What makes an infant overdue?
    The motivation behind why the infant is past due is generally not known. Some of the time it is a result of a hereditary inclination (inherited). Ladies who have had an infant that came a lot later than their due date are bound to have a overdue child in future pregnancies. Being brought into the world after the 40th week rarely harms the child or the mother.
  • The threats of going past your due date
    Most specialists and birthing assistants are happy for you to go a couple of days over your due date as long as everything is by all accounts, okay. Many will release pregnant ladies as long as about fourteen days over. Following 42 weeks, in any case, the infant's health may be in danger.

  • What happens when an infant is brought into the world late?
    Children brought into the world late bound to have behavioural issues. Infants brought into the world after over 42 weeks of pregnancy are at a lot higher danger of conduct and enthusiastic issues, for example, consideration shortage hyperactivity issue in youth, as per new examination.
Although, Due date prediction is nothing to be worried about, it most definitely is a better way of being prepared during your pregnancy. It serves a clinical purpose as well, your due date can help your doctor take better care of your needs.
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