Everything you need to know about pregnancy (4min)
Pregnancy and childbirth infographic
Calculate pregnancy week / week
If you are pregnant then you will want to know with certainty when your baby will finally see the light of day. With a birth date calculator, you'll learn how likely it is that your expected date of birth will actually be your child's birthday.
When will the baby be born?
If you are pregnant, then there will be only one important date for you: the date of birth. But when is it finally time? With the delivery date calculator you can calculate the delivery date quickly and easily.
All you have to do is enter the day of your birth or the last day of your menstrual period - after a few moments, the date calculator will show you the day your baby is born. The birth date calculator also tells you which pregnancy week you are in.
The pregnancy calendar is based on the Naegele rule
From fertilization to birth, there are an average of 266 days - that's 38 weeks. Anyone who wants to know when the baby is born today does not need to know when it was the day of conception. After all, that's not so easy - who knows when it really worked?
Especially if you had sex several times, it is sometimes difficult to say that it has taken that one day. That's why the appointment "post menstruationem" - that is, with the day of your last menstrual period - should be calculated.
That is, it is the last menstrual period and not the day of conception. The birth date calculator assumes that the fertilization took place at the middle of the cycle - ie on the 14th day (if your cycle lasted 28 days). This results in a pregnancy duration of exactly 280 days - that is 40 weeks.
This also means that the first week of pregnancy has started, although you do not know that you are pregnant. Due to the fact that the cycle lengths do not always have to be the same, deviations can occur. The probability of a "precision landing" is therefore very unlikely.
Incidentally, the term calculator deals with the Naegele Rule, a standard formula composed as follows:
"The first day of the last period + 7 days - 3 months + 1 year"
9 percent come to the calculated date of birth
In the course of pregnancy, which actually only takes a few months, the tiny cells develop into a human.
A miracle, which of course does not always have to keep to the schedule. No birth timer calculator in the world, whether he follows the Naegele rule or applies an alternative calculation formula, will accurately predict the day your baby sees the light of day.
Only then, if you have a caesarean section or the birth is initiated, the date of birth is fixed (exception: the baby comes earlier).
If you expect a normal birth, about 90 percent of all children will be born two weeks after or three weeks before the calculated date. On schedule are those children born between the 37th and 42nd week of pregnancy; Only 9 percent of all children actually arrive at the calculated date of birth. 9 percent are also too early - ie before the 37th week of pregnancy.
Only 1 percent comes after the 42nd week of pregnancy. This is because the doctors initiate the birth when the due date is exceeded two weeks.
Which data do doctors use to calculate the expected date of birth?
You may also find that even the doctors and midwives are not always 100 percent sure when it comes to calculating the delivery date. Thus, the date of birth, depending on the size and weight of the child, repeatedly move.
The doctors focus on the skull-rump-length, the femur and the skull diameter. On the basis of these data, which are compared with the statistical norm values, a calculation of the delivery date can be made.
Why we want to know the date of birth
The fact is, the baby always takes the time it really needs, until it is ready. Ideally, the birth begins when the baby has developed well - that is, the lungs are fully mature. The child can therefore breathe independently.
But why do you focus so much on the birth date? Because the parents want to be prepared. Finally, preparations must be made - it is about the completion of the nursery, any special leave and various purchases (stroller and the like).
And it's also about the Vorfreunde - of course, you want to know when the child can finally be held in the arms!