![]() While the conception date is an estimate and not an exact prediction, it can be useful for determining the gestational age of the baby and for planning important prenatal appointments and tests. The resulting date is the estimated date of conception, which is the point at which the woman’s egg was fertilized by sperm and began to develop into a baby. This is typically done by taking the first day of the woman’s last menstrual period and subtracting 14 days (or two weeks). Enjoy this special time and get ready for the arrival of your little one! Conception Date CalculatorĪ conception date calculator is a tool that can be used to help determine the approximate date that a woman conceived. Remember that a pregnancy due date calculator is only an estimate and can help you plan ahead, but it’s not set in stone. It’s important to keep in mind that this is an estimate only babies rarely arrive on their exact due date! Make sure you have a talk with your healthcare provider if you have any questions or concerns about the estimated due date. Using a pregnancy due date calculator is quick, and easy, and provides valuable information about when to expect your baby. It also helps to ensure that your healthcare provider has enough notice and can be prepared for the delivery. Knowing your due date range means you’ll have time to buy the things you need, make arrangements for childcare or other family help, and organize any necessary appointments before your baby arrives. The calculator is based on a 28-day menstrual cycle.Using a pregnancy due date calculator can be an excellent way to plan ahead. All you have to do is enter the first day of your last period, and our calculator will tell you the due date. Use the due date calculator: This is easiest way for you to estimate your total weeks of pregnancy and when your little one is expected to enter the world. This will help your healthcare provider to arrive at a date.ģ. Your obstetrician may advise an early pregnancy ultrasound (usually done at 12 weeks), which will measure the length of the foetus from the crown to the rump. Prenatal ultrasound: If you are not sure of the date of your last menstrual period, an ultrasound will give a more accurate estimate of when your baby will be born. ![]() ![]() Counting one year ahead of that date will help you arrive at your estimated delivery date.Ģ. In this method, you add seven days to the first day of your last cycle and subtract three months. You can also use the Naegele’s rule to calculate due date. This is based on a 28-day menstrual cycle. Due date can be calculated by adding 280 days to the first day of your last period. The first day of your last period: Knowing the first day of your last menstrual cycle is helpful in arriving at your estimated date of delivery and to calculate your pregnancy weeks. The due date is usually calculated in a number of ways, such as:ġ. Happy pregnancy!Ī full term pregnancy lasts for about 40 weeks or 280 days. You can use the week-by-week pregnancy calculator to better assess the trimester of your pregnancy, developments and experiences you have and can expect to have. In the case of Vitro Fertilization (IVF), the date of conception will be known accurately, and EDD can be calculated by adding 266 days to that date.Īs you progress into your pregnancy, your baby grows every day and your body changes too. Using ultrasound to measure the foetus in the first trimester (up to and including 13 6/7 weeks of gestation) is the most accurate method to arrive at the gestational age. The accuracy of such an estimate of the gestational age varies. Assumption of LMP to arrive at the due date of pregnancy may result in an overestimation of the pregnancy duration to the tune of over 2 weeks.Ĭoming to ultrasound, this approach considers the size of the foetus to determine the gestational age (the time since the first day of LMP). The accuracy of the estimation of EDD in this method depends on how accurately the mother can recall the day of intercourse, if she has regular 28-day cycles and ovulation, and conception occurs on the 14 th day of the cycle. ![]() With the pregnancy due date calculator, you will also be able to calculate the number of weeks and days you are into your pregnancy. You can calculate the approximate date by considering the first day of the Last Menstrual Period (LMP) and adding 280 days to this. Estimated Due Date (EDD or EDC) is the date on which a non-induced delivery is expected to occur.
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