Studies have shown that fewer than 4% of births occur on the exact due date, 60% occur within a week of the due date, and almost 90% occur within two weeks of the due date. 2 As such, while it is possible to be fairly confident that a person's child will be born within about two weeks of the due date, it is currently not possible to predict the He was born on July 4, 1995, in Syracuse, New York. He's a hip-hop artist, singer, and songwriter known for bending music genres. Your baby is conceived. You'll have a positive pregnancy test. Cells in your baby's future heart are flickering. You may have your first prenatal visit. You'll be offered NIPT (Noninvasive prenatal test) While the due date is often estimated as a single date, it can be helpful to consider a range of due dates, since only 4% of births occur on the estimated due date. 1. Due dates can be estimated using a number of different methods, including the last menstrual period, ultrasound, conception date, and IVF transfer date. Last menstrual period Our conception calculator, also known as a reverse due date calculator, is the answer to the question "When did I conceive?" as it estimates when your pregnancy was conceived. But remember, it's only an estimated due date, not a deadline for your baby to arrive. Just 4 percent of babies are born on their EDD. Our pregnancy Due Date Calculator (or estimated Due Date Calculator) can help. Here’s how to calculate your due date using your last period, conception date, IVF transfer date, or timing of your last ultrasound. Your due date is July 4, 2025. Congratulations! You are 39 weeks and 3 days pregnant. Recalculate your due date. Did You Know? Only 1 in 20 babies are born on their actual due date. A normal pregnancy often lasts from 38 to 42 weeks, which keeps the majority of parents guessing right up until delivery day. Calculate delivery due date , concpetion date, gestational age and other important dates during pregnancy using LMP, ultrasound dating, or date of embryo transfer (IVF). This free pregnancy conception calculator estimates a range of conception dates based on a provided due date, last period date, or ultrasound date. Your due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (assuming a 28 day cycle). Note that your menstrual period and ovulation are counted as the first two weeks of pregnancy. Our reverse due date calculator can help you do the math in an instant. A reverse due date calculator uses your estimated due date (or the date of birth) to figure out the approximate date of conception. A reverse due date calculator will also tell you the window in which intercourse most likely led to conception. Conception date calculation. We assume that the estimated due date is 40 weeks from the first day of the last period in your pregnancy calculation and that the conception occurs two weeks into your menstrual cycle. The formula: Conception date = due date - 40 weeks + 14 days. Reference: Naegele's rule Want to know what date and day of the week you were likely conceived on? Simply select your birthday (or due date if you were born premature or late) and click the "Calculate Conception Date" button. Our due date calculator calculates your estimated due date from your last period, conception, or ovulation date. Due dates can be calculated either by formula or from ultrasound measurements of the growing baby. Formulas are quick and easy and can be used by anyone. Enter date of last menstrual period, gestational age (on today's date or other ultrasound date), date of conception, OR estimated due date to estimate the other dates. If you know when you conceived, our pregnancy calculator calculates your due date by adding 38 weeks to the date of conception. This method of calculation may be more accurate than a LMP due date calculation if you have irregular or consistently longer or shorter cycles than 28 days. Your due date July 4th, 2025 could be changed if there is a significant difference between the due date based on ultrasound and the due date calculated from your LMP (July 4, 2025) date. The American College of Obstetricians and Gynecologists, the American Institute of Ultrasound in Medicine, and the Society for Maternal-Fetal Medicine have And guess what? You can use your conception date to find out your baby’s due date. Just add 266 days (aka 38 weeks or 9 ½ months) to your conception date to get the answer in the form of your estimated due date. But contrary to popular opinion, your conception date is not necessarily the same as the day you had sex when you were trying to LMP: If you enter the first day of your last menstrual period, the tool calculates your due date assuming a 28-day cycle. Conception Date: If you know when conception occurred, the calculator will use that date for a more accurate estimate. Use our pregnancy calculator by plugging in the date of your last period, the date you conceived if you know it, the timing of your IVF transfer, or your first ultrasound date. Likely date of conception: End of first trimester (12 weeks): End of second trimester (27 weeks): Your due date is (40 weeks): 1. Fetal age (from the conception date): 2. How far along you are in your pregnancy:
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