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Free online due date calculator

Due Date Calculator,What is your average cycle length?

Most pregnancies last around 40 weeks (or 38 weeks from conception), so typically the best way to estimate your due date is to count 40 weeks, or days, from the first day of your last Your due date is calculated by adding days (40 weeks) to the first day of your last menstrual period (assuming a 28 day cycle). Note that your menstrual period and ovulation Date Calculator: Add to or Subtract From a Date Enter a start date and add or subtract any number of days, months, or years. Count Days Add Days Workdays Add Workdays Weekday ... read more

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. BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world.

When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals. We believe you should always know the source of the information you're seeing. Learn more about our editorial and medical review policies.

Methods for Estimating the Due date. American College of Obstetricians and Gynecologists. Committee Opinion. May Reaffirmed Prenatal Genetic Testing Chart. American College of Obstetrician and Gynecologists. ACOG Statement on FDA Warning on Genetic Non-Invasive Prenatal Screening Tests. Johns Hopkins. Calculating a Due Date. Clinical manifestations and diagnosis of early pregnancy.

Join now to personalize. Update child info. Choose a calculation method Last period Conception date I know my due date. First day of my last period. See your timeline.

By Olivia DeLong. Medically reviewed by Cheryl Axelrod, M. Sources BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. advertisement page continues below.

Featured video. Pregnancy Week by Week. Chinese Gender Predictor. Calculation Method. The first day of your last period. Date of Conception. Date of Transfer. IVF 3 Day Transfer Date. IVF 5 Day Transfer Date. Date of Ultrasound. by Catherine Donaldson-Evans.

Medically Reviewed by Aaron Styer, M. Medical Review Policy All What to Expect content that addresses health or safety is medically reviewed by a team of vetted health professionals. Latest update: See more. How to Calculate Your Due Date. First day of last period Most pregnancies last around 40 weeks or 38 weeks from conception , so typically the best way to estimate your due date is to count 40 weeks, or days, from the first day of your last menstrual period LMP.

Conception date If you've been tracking ovulation symptoms or have been using ovulation test strips , then you may be able to use your conception date to calculate your pregnancy due date. IVF transfer date If you conceived through in vitro fertilization IVF , you can calculate your due date using your IVF transfer date.

The size of your uterus, which will be noted when your initial internal pregnancy exam is performed, can also be a factor in pinpointing the EDD. Can I plan my due date? Can my due date change? Other resources Early Pregnancy Symptoms Your Pregnancy, Week-by-Week Baby Names Chinese Gender Predictor Ovulation Calculator Baby Registry Builder. View Sources. What to Expect When You're Expecting , 5th edition, Heidi Murkoff. What to Expect Before You're Expecting , 2nd edition, Heidi Murkoff.

com, Pregnancy Week-by-Week , com, 7 Signs of Ovulation , September com, When and Why Your Doctor May Change Your Due Date , February It still uses the average gestational age at birth of 40 weeks from a woman's last menstrual period, as do the other methods. In the case of IVF, however, the due date estimate can be made based on LMP, day of ovulation, egg retrieval, insemination, as well as the date of the 3-day or 5-day embryo transfer.

In this calculator, the embryo transfer date is used. Generally, the point within the 37 to week window at which the baby is born is not a cause for concern. Babies born between weeks, weeks, and weeks are considered early term, full-term, and late-term, respectively. Under normal circumstances, babies born within any of these ranges can be healthy, though full-term babies generally have better outcomes.

These ranges are important as a reference for doctors to determine whether or not any action is necessary. For example, if a woman goes into labor too early at 33 weeks, doctors may stop labor to avoid a preterm baby that can have a host of health issues due to underdevelopment.

Conversely, if a woman has not gone into labor after 42 weeks, doctors may induce labor. One possible complication of allowing the pregnancy to proceed beyond 42 weeks is that the placenta, which is responsible for providing nutrition and oxygen to the baby, can stop functioning properly, while the baby continues growing requiring more nutrients and oxygen , which would eventually lead to a point in the pregnancy where the baby can no longer be adequately supported.

We believe you should always know the source of the information you're reading. Learn more about our editorial and medical review policies. Most pregnancies last around 40 weeks or 38 weeks from conception , so typically the best way to estimate your due date is to count 40 weeks, or days, from the first day of your last menstrual period LMP. You could also subtract three months from the first day of your last period and add seven days. The first day of your LMP is how most health care providers estimate a baby's due date.

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 estimated due date. If you've been tracking ovulation symptoms or have been using ovulation test strips , then you may be able to use your conception date to calculate your pregnancy due date. Just add days to get your estimated due date or select "Conception Date" from the menu above, and let our Due Date Calculator do the math for you.

If you conceived through in vitro fertilization IVF , you can calculate your due date using your IVF transfer date. Most embryo transfers occur either three days or five days after egg retrieval and fertilization. If you had a day-three transfer, count days from the transfer date to calculate your due date, and if you had a day-five transfer, count days.

Or select "IVF" from the menu above. An early ultrasound , which can more accurately date the pregnancy. Just be aware, however, that not all women get an early ultrasound. Pregnancy milestones such as the first time the baby's heartbeat is heard around week 9 or 10, though it can vary and when you first feel fetal movement on average between 18 and 22 weeks, but it can be earlier or later , can give clues as to whether your due date is accurate. Your fundal height , which is the measurement from your pubic bone to the top of your uterus, is checked by your practitioner at each prenatal visit and helps confirm your due date.

Whether you're trying to avoid being very pregnant in the middle of summer or are a teacher who wants to maximize time off with your little one, you can try to time when you conceive in order to "plan" your due date. But even if you're one of the lucky ones who's able to get pregnant when she really wants to, just remember that you probably won't be able to map out exactly when you'll give birth to the day or even the week or month!

Still, you can try our Ovulation Calculator , which uses the date of your last menstrual period and your typical cycle length to discover the days you're most likely to be fertile and increase your chances of conceiving.

Yes, your due date can change. It may be that you have irregular periods and your early ultrasound dating was off, or that your first ultrasound was in the second trimester. It could also be because your fundal height is abnormal, or your levels of alpha-fetoprotein AFP , a protein made by the baby, are outside the usual range.

Talk to your practitioner if you have any questions or concerns. The educational health content on What To Expect is reviewed by our medical review board and team of experts to be up-to-date and in line with the latest evidence-based medical information and accepted health guidelines, including the medically reviewed What to Expect books by Heidi Murkoff. This educational content is not medical or diagnostic advice.

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Registry Builder Take the Quiz. Due Date Calculator When is your baby due? Use this pregnancy calculator to find your due date based on the date of your last menstrual period, conception date, IVF 3-day or 5-day transfer date or date of your last ultrasound.

Calculation Method. The first day of your last period. Date of Conception. Date of Transfer. IVF 3 Day Transfer Date. IVF 5 Day Transfer Date. Date of Ultrasound. by Catherine Donaldson-Evans. Medically Reviewed by Aaron Styer, M. Medical Review Policy All What to Expect content that addresses health or safety is medically reviewed by a team of vetted health professionals.

Latest update: See more. How to Calculate Your Due Date. First day of last period Most pregnancies last around 40 weeks or 38 weeks from conception , so typically the best way to estimate your due date is to count 40 weeks, or days, from the first day of your last menstrual period LMP.

Conception date If you've been tracking ovulation symptoms or have been using ovulation test strips , then you may be able to use your conception date to calculate your pregnancy due date. IVF transfer date If you conceived through in vitro fertilization IVF , you can calculate your due date using your IVF transfer date. The size of your uterus, which will be noted when your initial internal pregnancy exam is performed, can also be a factor in pinpointing the EDD.

Can I plan my due date? Can my due date change? Other resources Early Pregnancy Symptoms Your Pregnancy, Week-by-Week Baby Names Chinese Gender Predictor Ovulation Calculator Baby Registry Builder.

View Sources. What to Expect When You're Expecting , 5th edition, Heidi Murkoff. What to Expect Before You're Expecting , 2nd edition, Heidi Murkoff.

com, Pregnancy Week-by-Week , com, 7 Signs of Ovulation , September com, When and Why Your Doctor May Change Your Due Date , February com, How Many Weeks, Months and Trimesters in a Pregnancy? com, In Vitro Fertilization IVF , April com, Birth Symbols by Month: Zodiac, Birthstone, Flower and Tree , September American College of Obstetricians and Gynecologists, Methods for Estimating the Due Date , May Centers for Disease Control and Prevention, ART Success Rates , March Stanford Children's Health, Calculating a Due Date , Mayo Clinic, Prenatal Care: First Trimester Visits , November Signs of Labor.

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Pregnancy Due Date Calculator,Help and Example Use

Your due date is calculated by adding days (40 weeks) to the first day of your last menstrual period (assuming a 28 day cycle). Note that your menstrual period and ovulation Date Calculator: Add to or Subtract From a Date Enter a start date and add or subtract any number of days, months, or years. Count Days Add Days Workdays Add Workdays Weekday Most pregnancies last around 40 weeks (or 38 weeks from conception), so typically the best way to estimate your due date is to count 40 weeks, or days, from the first day of your last ... read more

Incompetent cervix No Yes. Please select and "Clear" any data records you no longer need. First day of your last menstrual period First day of your last menstrual period Estimated date of conception Estimated date of conception End of 1st trimester 12 weeks End of 1st trimester 12 weeks Date to book your birthing class Date to book your birthing class End of 2nd trimester 27 weeks End of 2nd trimester 27 weeks Estimated due date Estimated due date Back. Learn More. Most pregnancies last around 40 weeks or 38 weeks from conception , so typically the best way to estimate your due date is to count 40 weeks, or days, from the first day of your last menstrual period LMP.

com Navigation Due Date Calculator Pregnancy Week by Week More Calculators Pregnancy Articles Ovulation Calendar Calculator Widgets. Using conception date to estimate due date is similar to using the last menstrual period, except for a difference of about two weeks in free online due date calculator point of measurement, based on the timing between the last menstrual period and the date of conception. IVF 5 Day Transfer Date. Here's What to do Next. To save changes to previously saved entries, simply tap the Save button. Medically Reviewed by Aaron Styer, M.

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