What You Should Know About Pregnancy Calculators To Learn Your Baby’s Due Date

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You just found out you were pregnant! Congratulations! Now, you’re probably wondering when your baby will be due. You start looking for this information and come across a term called “Pregnancy Calculator.” What’s a pregnancy calculator?

The most important information you need to know about pregnancy calculators is that they help you to determine the baby’s due date by going off the date of your last menstrual period.

Importance Of Gestational Period To Understand More About Pregnancy Calculators

First, let’s look at what a due date is. In 1850, Dr. Naegele theorized that the average length of human gestation was about 266 days after conception. His assumption was that a woman’s cycle occurred every 28 days and on the 14th day, she ovulated. He used this information to come up with a calculation for a baby’s due date:

((LMP + 7 days) – 3 months) = Due Date

Bear in mind that most pregnancies last up to 40 weeks (or 38 weeks from conception). Therefore, the best way to determine your due date is to count 40 weeks from the date of your last period started. Your doctor will use this to estimate the baby’s due date. And, this date is fairly accurate, although it rare for a baby to actually be born on their “estimated” due date. In fact, women can give birth up to two weeks before or after that due date.

Most women do not track their ovulation cycle, so knowing the exact date of your baby’s due date is based on the last time your period started.

What You Should Know About Pregnancy Calculators On Various Websites

When it comes to the different pregnancy calculators out there, not all of them are accurate. Pregnancy calculators can be found and used for free on any parenting or pregnancy website, but that does not make them equal. If you want to get an accurate idea of when your baby’s due date is, there are three worthwhile pregnancy calculators for you to use.

About.com – This website has an extremely useful pregnancy and childbirth guide that also has a pregnancy calculator. What you should know about its pregnancy calculator is that it’s based on a week-to-week calendar. It lays out all 42 weeks of pregnancy, including links to illustrations, pictures and in-depth data about that week.

Babycenter.com – This website is ideal for women trying to conceive or already pregnant. What you need to know about its pregnancy calculator is that you’ll get the due date, a weekly planner for free and regular emails about the baby’s development. They are other tools such as a baby name finder, ovulation calculator, etc.

Babiesonline.com – This site is great for expectant mothers. What you should know about its pregnancy calculator is that it’s extremely unique – it will give you information about the conception date, due date and baby’s age. But, it gives you some fun facts as well such as your unborn child’s astrological sign, flower and birthstone. It will also calculate when your child will start school, graduate high school and when they could finish college.

One More Thing About Pregnancy Calculators

It’s important that you understand that pregnancy calculators are only useful for women who have regular cycles. Therefore, if your cycle isn’t regular, you may find that a pregnancy calculator will be unreliable for you.

In order to get a more accurate determination of a baby’s due date, your doctor may request an ultrasound, measure your uterus size and get the fundal height. Based on this information, your due date is likely to change than what the pregnancy calculator suggested.

 

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