Expectancy calculator for giving birth to boys and girls
Release time : 09/11/2025 09:30:04
The due date calculator for male or female birth can be obtained by adding 9 months and 1 week (280 days) to the first day of your last menstrual period.
The last menstrual period was January 1. Adding 9 months gives us October 1, and adding 7 days to that gives us October 8.
October 8th is the estimated due date.
True labour can occur within 2 weeks either side of the estimated date of delivery.
If your menstrual cycle is irregular or you can't remember the last time you had your period, you can estimate the early pregnancy stage based on gynecological examinations.
Using a baby-birth calculator, determining whether the baby will be a boy or girl is essentially about adding your age in lunar calendar (your age in Chinese) to the month of your due date. If the sum is odd, it means the baby will be a boy; if it's even, it means the baby will be a girl.
However, in essence, a person's gender is determined by the sex chromosomes in their gametes, which have no connection to the timing of conception.
Prenatal Calculator: Predicting the Sex of the Baby? How is it calculated? Many expectant fathers and mothers are keen to know, right? Let's explore together with the editor.
Calculated from the last menstrual period, add 9 or subtract 3 to get the estimated due date month.
The day count is added by seven, which equals the due date.
The last menstrual period was February 1, 1985, with the exact day being 1 + 7. The estimated date of delivery is November 8 (1985) and the month is February 2 + 9. The last menstrual period was April 15, 1985, with the exact day being 15 + 7. The estimated date of delivery is January 22 (1986). If you cannot remember the exact date of your last menstrual period, you may use the date of fetal movement to estimate it.
Generally, fetal movements begin around the 18-20th week of pregnancy.
The calculation method is as follows: For primiparas, the gestational age is added 20 weeks from the date of fetal movement.
The multigravida is 22 weeks beyond the expected date of fetal movement.
(3) Based on the basal body temperature curve, calculate: The last day of the low-temperature segment of the basal body temperature curve is considered the ovulation day. From this date, count back 264-268 days or add 38 weeks to determine the estimated ovulation date.
(4) Based on ultrasound examinations: When a doctor performs an ultrasound, measurements such as the biparietal diameter, head circumference, and femur length can be taken to estimate the gestational age and thus predict the due date (this method is mostly used by doctors for diagnostic purposes in ultrasound examinations).
Calculate the estimated date of labor based on the onset of morning sickness: The general onset of morning sickness is typically observed around the 6th week of pregnancy, which corresponds to 42 days after the last menstrual period. Thus, calculating from this point back 280 days will provide the estimated date of labor.
Based on the uterine fundus height, a rough estimate of the estimated date of labor can be made if the last menstrual period is not recorded.
At the end of the 4th month of pregnancy, the uterus is at a height between the navel and the upper margin of the pubic bone (10 centimeters above the pubic symphysis).
At the end of pregnancy, the uterus is about 2 finger-widths below the navel (16-17 cm above the pubis).
At the end of the sixth month of pregnancy, the fundus is level (19-20 cm above the umbilicus).
At the end of pregnancy, at 7 months, the fundus of the uterus is about three fingers above the navel (22-23 cm above the pubic bone).
At the eight months' end of pregnancy, the umbilicus is at the level of the 24th to 25th ribs.
At the end of pregnancy, the uterus is at the level of the umbilicus (28-30 cm above the pubic bone).
At the end of the tenth month, the uterine fundus has returned to its height at eight months, but there is an increase in abdominal circumference compared with that at eight months.
The baby gender calculator is not accurate. It's only about 53% accurate.
Premature or postmature birth is abnormal. The term "full-term fetus" refers to the gestation period of 37 weeks to 42 weeks, during which approximately 80% to 90% of pregnant women give birth.
Delivery before 37 weeks of gestation is considered prematurity, accounting for approximately 5% to 10%.
The belief that a girl is certain to be born after the full moon lacks scientific basis. The timing of a fetus's birth is related to when the sperm fertilizes the egg, and if the fertilization occurs later in pregnancy, the child will grow and develop more slowly, naturally resulting in an extended period before birth.
At 37 weeks, be ready to give birth at any moment.
The prenatal calculator is accurate in predicting a boy or girl? Let's see, what determines whether it will be a boy or a girl.
Usually, male chromosomes have X and Y, while female only have X.
When a man and woman have sex, if the male X chromosome and the female X chromosome combine, then the baby will be a girl.
If a male Y chromosome and a female X chromosome are combined, then the fetus is a boy.
It should be said that the gender of a fetus is determined by chromosomes, and there is no correlation with the estimated date of delivery. Therefore, claims about predicting the sex of a baby based on its estimated due date are unfounded in scientific terms.
Editor's Note: There are numerous methods online claiming to predict the sex of a baby. All expectant mothers should be cautious and remember that these methods should only be used as references, not as absolute truths.
Prenatal Calculator: Methods for Determining the Gender of a Baby Expectant mothers and their families and friends delight in calculating whether the baby will be a boy or a girl, even though pregnancy is a month-long journey. Common traditional methods for predicting the gender of the baby include the Prenatal Calendar for Gender Prediction Table and the Method for Predicting the Gender Based on Pregnancy Symptoms.
Nowadays, there's a new method online: predicting whether a baby will be a boy or girl.
What exactly is the method for determining a baby's sex using a prenatal calculator? Let us delve into a detailed explanation.
What is the due date? The term "due date" simply refers to the estimated date of childbirth for pregnant women. However, it's difficult for each expectant mother to accurately determine the exact time of conception.
Prenatal Calculator: Predicting the Baby's Gender: 1. Add the pregnant woman's age (in years) and the month of the predicted date of delivery (in lunar calendar) together, if the sum is odd, the baby will be a boy.
If it's a double, then she is a girl.
(1) Prenatal Period Calculation: According to medical standards, the prenatal period is calculated from the first day of the last menstrual period. The entire pregnancy spans a total of 280 days, with each pregnancy month being 28 days.
The month of the last menstrual period plus 9 or minus 3 is the expected date of delivery.
The days plus 7 equals the estimated date of birth.
The last menstrual period was March 4, 2012, and the estimated due date was calculated by adding 9 months to the first month of the last menstrual period, then adding 7 days from that month, and finally adding 11 days. The estimated due date is December 11.
(2) Prediction of Sex: If the pregnant woman is born in 1989, then her age (in years and months) would be 35 + 11 = 46. The last digit is odd, indicating that she will have a boy.
2. Observe the baby's birth time.
If the child is born before the due date, there's a higher chance of having a boy.
If the baby is born after the due date, there is a higher probability of being a girl.
Calculating the sex of a baby beyond the due date is a topic that many readers are keen to understand. Let's delve into this matter together, as guided by our editor.
The pregnancy lasts for approximately 40 weeks, or about 9 months and 7 days. The estimated due date can be calculated by using the last menstrual period.
The calculation method is to start from the first day of the last menstrual period, subtract 3 or add 9 months, and add 7 days.
However, the actual delivery date may differ by 1 to 2 weeks from the estimated due date. If a woman's last menstrual period is not clearly remembered or irregular, it is necessary for a doctor to calculate the due date for her.
The due date calculator can easily and accurately calculate the due date based on your menstrual cycle! The entire due date is approximately 40 weeks (280 days), and the calculation method for the due date is to start from the first day of the last menstrual period, subtract 3 or add 9 months, and add 7 days.
However, the actual delivery date may differ by 1 to 2 weeks from the estimated due date. If a pregnant woman has difficulty recalling her last menstrual period or if her menstrual cycle is irregular, it is necessary for a physician to calculate the estimated due date.
Last menstrual period was 1 February, 1985.
Day 1 + 7, estimated due date is: ———————= November 8 (Year 85) Month 2 + 9, last menstrual period was April 15, 1985.
Date: 15+7, the estimated due date is: ————=1 January (86) Month 4-3, calculate the estimated due date by adding 9 months and 1 week (280 days) to the first day of the last menstrual period.
The last menstrual period was January 1. Adding nine months brings it to October 1, and adding one week (seven days) brings it to October 8.
The estimated due date is merely an estimate, and the actual time of birth often deviates by 1-2 weeks from the estimated due date.
From the introduction above, it is evident that there is a basis for it and the presentation is well-reasoned. Readers are encouraged to take a look and learn more about it—there's nothing inherently harmful about this.
*The medical information provided in this text is for reference only.
In the event of discomfort, it is recommended to seek medical attention immediately for a precise diagnosis and treatment by a physician in person.