Baby date predictor
Calculate your due date: How to find your baby's due date
Choose a calculation method Last periodConception dateI know my due date
First day of my last period
BabyCenter's Due Date Calculator
Use our pregnancy due date calculator by plugging in either the date of your last menstrual cycle or the date you know you conceived. The calculator will do the rest.
How is my due date calculated?
There are several ways your due date is determined. If you happen to know the day you conceived, you can count 38 weeks from that day to find your due date. (Human gestation takes about 38 weeks.)
But very few expectant moms know exactly when they conceived. Even if you only had sex once during your fertile period, you wouldn't conceive on that day unless you happen to be ovulating. Sperm can live for up to five days inside your fallopian tubes. So, it could be up to five days after you have sex that you release an egg (ovulate) and it gets fertilized by a waiting sperm. That's the day you conceive.
So, without knowing the day of conception, how does anyone determine a due date?
First day of your last period
The most common way to calculate your pregnancy due date is by counting 40 weeks from the first day of your last menstrual period (LMP). And that's how most healthcare providers do it.
If your menstrual cycle length is the average length (28-day cycle), your menstrual cycle probably started about two weeks before you conceived. This explains why pregnancies are said to last 40 weeks instead of 38 weeks.
This method doesn't take into account how long your menstrual cycle actually is or when you think you might have conceived. But generally speaking, women typically ovulate about two weeks after their menstrual cycle starts. And women are more likely to know when their last period started than the day they ovulated.
Conception date
If you do happen to know precisely when you conceived – say, if you were using an ovulation predictor kit or tracking your ovulation symptoms – you can calculate your pregnancy due date based on your conception date. Just choose that calculation method from the pulldown above and put in your date.
Note: Again, you don't necessarily conceive on the day you have sex.
IVF transfer date
If you conceived through IVF, you can calculate your due date using your IVF transfer date. If you had a Day 5 embryo transfer, count 261 days from your transfer date. If you had a Day 3 embryo transfer, count 263 days.
Can my due date change?
Your healthcare provider might revise your due date if your baby is measured during a first trimester ultrasound scan and found to be much bigger or smaller than expected for gestational age. This is more likely to happen if you have an irregular menstrual cycle length that makes it hard to pinpoint the date of conception.
Your healthcare provider will measure your baby during that ultrasound exam to figure out how far along your baby is and then provide you with a new due date.
What if I already know my due date?
If you already know your due date, you can use this calculator to see your pregnancy timeline. It will tell you when you'll hit various milestones, and when you may be due for prenatal tests and prenatal visits. You'll also find what your baby's sign and birthstone will probably be and which famous people were born on your due date.
How likely am I to give birth on my due date?
Of course, a due date calculation is always approximate, whether it's from our tool or from your doctor or midwife. Only 1 in 20 women delivers on their due date. You're just as likely to go into labor any day during the two weeks before or after.
Want more information about how the weeks, months, and trimesters of pregnancy are counted? See our pregnancy timing chart.
How soon can I take a pregnancy test?
With all this talk about pregnancy due dates, you may be wondering when you can take a pregnancy test. To ensure you get the most accurate reading, it's best to wait a few days after your missed period to take a pregnancy test.
At-home urine tests measure the amount of hCG (human Chorionic Gonadotropin) present in your body. If you take a pregnancy test before you miss your period, you may not get an accurate result, despite what some tests advertise.
If you're getting a blood test in your provider's office, you may get results sooner. These tests also measure the amount of hCG in your bloodstream, but they're more sensitive than at-home urine tests. Blood tests may be able to detect pregnancy six to eight days after ovulation.
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Chinese gender predictor chart and calendar tool
Wondering whether you're having a boy or girl? Our Chinese Gender Predictor calculator forecasts your baby's sex based on an ancient Chinese gender chart and the Chinese lunar calendar.
There's no scientific evidence that the Chinese Gender Predictor works. But since there are only two choices – boy or girl – it has at least a 50-50 chance of making an accurate prediction!
What is the Chinese gender predictor chart?
Legend has it the chart is more than 700 years old and was discovered in a royal tomb near Beijing. The technique involves converting the mother's age and the month of conception to dates on the Chinese lunar calendar, then cross-checking that data on a chart that predicts the baby's sex.
How accurate is the Chinese gender predictor chart?
Researchers at the University of Michigan School of Public Health did a study to test the Chinese lunar calendar method of predicting a baby's sex. They reviewed the records of 2.8 million Swedish births. Then they used a website-customized algorithm to estimate each mother's lunar age and month of conception. When they checked the predictions of the Chinese baby calendar method against the sex of the children who were born, they concluded that the Chinese birth chart was correct about 50 percent of the time -- no more accurate than flipping a coin.
How can I really tell what my baby’s sex will be?
There are several ways.
You can find out your baby's sex starting at 10 weeks of pregnancy if you have noninvasive prenatal testing (NIPT), a blood test that can detect Down syndrome and a few other chromosomal conditions. (It takes a week or two to get the results.)
Many pregnant women find out their baby's sex (if they choose to know) during their midpregnancy ultrasound, which is usually done between 18 and 22 weeks. However, if the technician can't get a clear view of the baby's genitals, it may not be possible to tell for sure.
Other women find out their baby's sex from a genetic test like chorionic villus sampling (CVS) or amniocentesis. These tests are usually done to determine whether a baby has a genetic disorder or a chromosomal abnormality, like Down syndrome. CVS is usually done between 10 and 13 weeks, and amniocentesis between 16 and 20 weeks. You have to wait for 2 weeks for the results from both tests.
If you have IVF, you can find out the sex before you even transfer the embryos. But if you have embryos of both sexes placed in your uterus, you won't know which one(s) implant.
At-home gender kits (available mostly online) test blood or urine to predict your baby's sex, but there's no scientific evidence that these tests really work.
What's the difference between gender and sex?
We're using the word gender here because people often use this word when talking about their child's sex. However, the two are not the same. A child is generally assigned a sex at birth based on biological characteristics, such as their genitals. But their sex designation may not match the gender identity (based on feelings and behaviors) that they assume later.
Learn more:
Gender prediction: Am I having a girl or a boy?
When and how can I find out my baby's sex?
15 fun baby gender predictor tests to try
Video: Should we find out our baby's sex?
All tools
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Is it possible to predict the future by date of birth?
- David Robson
- BBC Future
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Image copyright Thinkstock
Your birth month can affect your longevity, mental health and even your eyesight. Correspondent BBC Future explains why horoscopes are not such useless reading. nine0018
I was born in the first week of October, and according to my horoscope, I am a fair and balanced person, courageous but indecisive. In the horoscope you can even find a description of my appearance. According to one of the astrologers of the 19th century, Raphael, I have "a rather graceful appearance and a round face, very attractive, despite a certain roughness of features, ruddy in youth, but with a tendency to rashes, which can disfigure it in old age." I was offended, but remembered that, according to Rafael, the American actor and singer Zac Efron and the famous pop singer Gwen Stefani should have the same appearance. nine0011
Of course, in scientific circles, such predictions were considered fiction for a long time. Although a 1970 psychological study found that certain signs of the zodiac could be associated with certain personality traits, later scientists concluded that the result was almost certainly related to self-hypnosis. If a person is told from childhood that he will grow up fair, stubborn or passionate, he begins to move along a given trajectory. Scientists concluded that people who did not know their horoscope did not correspond to the descriptions given in it. nine0011
Perhaps astrologers are wrong in specific predictions, but there is some truth in the horoscope. In the past few years, scientists have begun to recognize that the month of birth can indeed determine the fate of a person.
The most obvious indicator is school performance: children born at the end of the school year study slightly worse than those born at the beginning of it, although this trend smoothes out over time. But there are other, more surprising relationships that are not easy to explain. nine0011
For example, in the late 1990s, Leonid Gavrilov, a senior researcher at the University of Chicago, discovered that people born in autumn usually live longer. Subsequently, he was able to confirm his discovery with the results of numerous studies among centenarians: in his latest work, it is stated that "autumn" children are 40% more likely to live to a hundred years than those born in March.
Image copyright Thinkstock
Image captionWinter children tend to have fewer vision problems
Gavrilov's discoveries at first caused only resistance and misunderstanding. “People who are not familiar with the results of the latest scientific research in this area are still skeptical - they associate my work with astrology,” says the scientist. “But when we transfer the data to scientific journals for specialists, experts already accept them very OK".
University of Oxford research fellow Sreeram Ramagopalan agrees that this topic is starting to get attention. He notes that the number of respondents in a number of early studies was very small, and therefore it is difficult to argue that their results are not a mere coincidence. "Large-scale complex studies have begun to be carried out quite recently, only in the last 4-5 years," he says. nine0011
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Some of the latest findings come from studies involving tens of thousands of people. For instance, Ramagopalan's own work, based on extracts from the medical records of nearly 60,000 British people, suggests that those born in winter and spring tend to suffer more from schizophrenia, depression, and bipolar affective disorder. nine0011
Other indicators that depend on the time of birth include vision (those born in winter are less likely to develop severe myopia) and a tendency to allergic diseases ( those born in summer are least at risk of allergies).
Admittedly, the mechanisms that determine these trends are poorly understood. Changes in diet and cyclical outbreaks of infectious diseases throughout the year can indeed affect a child's development, his health in the following decades, and even his ability in baseball (surprisingly, if you are a professional baseball player, then were born in autumn rather than in spring - perhaps success in sports is explained by the fact that the state of health of the "autumn" in infancy was better than that of those born in the spring?). nine0011
Image copyright Thinkstock
Image caption"Spring" children are more likely to become chess champions
In addition, different allergens are active at different times of the year. It is possible that one of the factors is simply the length of the day. According to studies, the dark time of day helps to regulate the growth of the eyeball. Thus, due to the long summer days in infants, excessive growth of the eyeballs is possible, accompanied by a loss of focus, while "winter" children, having matured, are not so often forced to wear glasses. nine0011
Vitamin D, which is produced during sun exposure, also plays a role. Deficiency of this vitamin has long been known to weaken bones and can cause rickets, and has recently been found to be of great importance for the development of the immune system (which may also affect susceptibility to allergic diseases) and the nervous system.
"Animal studies have shown that limiting maternal vitamin D intake during pregnancy causes severe neurological damage to the calf," says Ramagopalan. nine0011
Image copyright Thinkstock
Image caption"Summer" children are much less likely to suffer from depression explain the higher percentage of mental illness, such as schizophrenia or depression, among people born in winter.
This is still a hypothesis, although it unexpectedly found some confirmation in Denmark. Shortly after birth, every baby in this country has a blood sample taken from the heel. A dry blood sample is stored as an indicator of the state of health of a person at the time of his birth. By analyzing blood samples from people born in the early 19In the 1980s and early 1990s, scientists found that those who had low vitamin D levels at birth more likely to develop schizophrenia later.
It may be worthwhile for future parents to plan conception in accordance with these dates, but we must not forget that the effectiveness of such planning is usually low. However, Ramagopalan believes that in the end, it may be possible to find simple ways to smooth out seasonal differences - for example, by replenishing vitamin D in children born in the winter. nine0011
Image copyright Thinkstock
Image captionFall kids are more likely to live to 100 and. .. become professional baseball players
fate. Obviously, genes and upbringing are the main ones, but if random things like the month of birth can determine our mental health and life expectancy, then what are the other factors that can determine our future? nine0011Destiny may not be known from the stars, but we are just now beginning to understand how many invisible forces have been guiding our lives since we were conceived.
Read the original of this article in English is available on the website BBC Future .
A swindler or a magician: 120 years ago the mentalist Wolf Messing was born
September 10 marks the 120th anniversary of the birth of the most mysterious Soviet artist, the mentalist Wolf Messing. "Gazeta.Ru" recalls stories about the predictions of a psychic and his "friendship" with Stalin, the veracity of which was refuted after verification. nine0011
Honored Artist of the RSFSR Wolf Messing was born on September 10, 1899 in a village near Warsaw. According to the book by Nadezhda Dimova “Wolf Messing. The drama of the life of a great hypnotist", he suffered from headaches and sleepwalking from the age of three. He allegedly managed to cope with these ailments only with the help of a local healer.
When Messing was six years old, he impressed those around him with a phenomenal memory, reciting a set of biblical rules by heart. The adults decided to direct the child prodigy's skill in the right direction and at the age of nine sent him to study as a priest. Messing himself took this idea without enthusiasm and two years after entering his studies he fled to Berlin. In Germany, he took on any job to earn money for food. nine0011
Once Messing fainted from hunger, but the doctors decided that he was dead and sent the body to the morgue. Three days later, this boy "revived" - professor of psychiatry Norman Abel ruled that it was a case of lethargy.
Yesterday's "dead man" surprised Abel by supposedly being able to read his mind and asked him not to contact the police or the shelter. The specialist decided to take the boy to him and monitor the development of his abilities. He conducted many psychological experiments with Messing, and at the age of 16 the guy began to go on tour in Europe as part of a circus troupe, surprising the audience with psychological tricks. By the beginning of the war, Messing's paranormal abilities were known in many countries. nine0011
He arrived in the USSR as a Polish-Jewish refugee in 1939 and began performing in Moscow as an illusionist. One of the main calling cards of Messing throughout his life was a focus with the transmission of thoughts at a distance. For that time, such performances were extremely unusual and were in great demand among Soviet viewers.
But the stories about Messing's predictions and his close relationship with Joseph Stalin have always deserved the most attention.
In the pre-war period, a psychic allegedly claimed that there would definitely be a war between the USSR and Germany. Historian and writer Alexander Mosyakin also recalled the story of Messing's prediction about the outcome of the battle of Stalingrad. nine0011
“He said that it would end with the defeat of the Nazi troops, that he “sees” the captured field marshal, and gave the date - the beginning of February 1943. He was asked when the war would end. He said that the victory would be in 1945, and named the date - the date of signing the German Surrender Act: May 8. Here are two completely accurate predictions of Messing, made in the presence of so many people, ”the specialist assured.
According to other sources, Messing had such a trusting relationship with Stalin that he could enter the Kremlin without a pass. According to a famous legend, at 19In 1950, he predicted the crash of a plane on which the hockey team of the Central House of the Red Army, headed by Stalin's son Vasily, was supposed to fly to Sverdlovsk. The psychic called the Generalissimo and demanded that the flight be cancelled. As a result, the plane flew without Vasily and crashed.
Most of the theories and predictions related to the activities of the illusionist appeared only after the publication of his memoirs in 1965. In them, he talked about meeting with Stalin in Gomel, as well as with Albert Einstein in Vienna. However, after verification, it was found that Einstein did not live in Vienna during the indicated years, and his name is not on the list of people who were in contact with Stalin. nine0011
“Messing said that he met with Stalin, Khrushchev, Hitler, Freud's grandfather, Einstein - all this is an absolute lie from the first to the last word. One hundred percent. Just like his memoirs. He was just a talented entertainer who learned tricks,” said historian and writer Alexander Myasnikov.
Later, it was suggested that Messing's "memoirs" were fabricated by Mikhail Khvastunov, head of the science department at Komsomolskaya Pravda. This version was confirmed by the former scientific editor of the publication Vladimir Gubarev, who wrote about falsification in Pravda.ru in 2010.
“Unwittingly today, Wolf Messing becomes an apologist for ignorance, which is rapidly taking over our society. He would be upset that contributes to this, ”wrote Gubarev.
In 2009, Russian television aired the TV series Wolf Messing: Who Seen Through Time, based on the novel of the same name by screenwriter Eduard Volodarsky. The work highlights the biography of Messing according to his memoirs.
On the eve of the 120th anniversary of the birth of the “magician”, his alleged son Dmitry Kiselev came to the studio “Let them talk”. The man said that his mother had a brief affair with Messing after one of the sessions. nine0011
“I didn't come here for PR, not to become famous and make some money on this name. I came to find out the truth, because I myself am interested in it, ”said Dmitry Kiselev in the release of the Let Them Talk program.
Show host Dmitry Borisov noted that the man really looks like a psychic, but it will be difficult to prove their relationship.
Despite a number of proofs that Messing greatly exaggerated his abilities, and numerous revelations, his figure still attracts attention.