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Birla Fertility & IVF
Birla Fertility & IVF

Due Date Calculator

Eagerly awaiting your little one's arrival? Use our quick and easy Due Date Calculator to find out when to expect them! Enter your details in the due date calculator and get the most accurate estimated delivery date.

pregnancy due date

How To Use
Due Date Calculator?

This due date calculator is easy to use and needs zero effort. It is a simple yet effective method to find your pregnancy due date which is estimated based on entering the start date of your last menstruation period (LMP) and its average length.

Note: If the average length of the menstrual cycle is not known, the calculator takes 28 days by default.

calculate the due date from conception

How do you calculate the
due date from conception?

The due date calculator does the math based on the date of confirmed pregnancy by assuming the period including all three trimesters from the date of conception. It is typically estimated by adding 38 weeks to the date of conception.

estimated due date

What is an estimated
due date (EDD)?

The estimated due date is typically referred to as the most appropriate date finalised after all the calculations are done based on the last period and date of confirmed pregnancy. However, the due date may vary from one expecting mother to another depending on the type of pregnancy (whether it is normal or complicated) and the suggested delivery method (c-section or normal delivery). According to the stats, it is reported that only 4% of babies get delivered on the said due date.

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Signs & Symptoms
of Labor

IconWater break
IconContractions and tightening
IconFrequent urge to go to the toilet

Myths & Facts

Myths- “A delivery due date is always fixed”


FALSE! The percentage of newborns born on their due date is only about 5%. Babies are frequently born a week or two before or after the estimated due date since pregnancy can naturally fluctuate.

Myths- “Eating spicy food can induce labor and help meet the due date”


FALSE! The claim that eating spicy food can cause labor is unsupported by scientific data. Not what you eat affects when labor starts; instead, a variety of physiological factors play a role.

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Frequently Asked Questions

What is the Due Date in Pregnancy, and How is it Determined?

The estimated date of delivery, or due date, is usually determined by ultrasound measures or 40 weeks from the start day of the last menstrual period (LMP). In this calculator, we use both the start date of the last menstrual period (LMP) and the cycle length to predict your due date.

Can the Due Date in Pregnancy Change?

Indeed, the due date may alter depending on parameters like the results of an ultrasound, changes in the duration of the menstrual cycle, or modifications made by medical professionals during the prenatal visit. Due dates are frequently changed as a pregnancy develops.

How are Weeks in Pregnancy Calculated?

Pregnancy weeks are usually measured starting on the first day of the last menstrual period (LMP). The weeks are predicted based on a menstrual cycle lasting 28 days, with ovulation taking place on day 14. Typically, from the last menstrual period (LMP), pregnancy lasts for about 40 weeks or 280 days.

Can One Predict Their Due Date Accurately?

It’s difficult to anticipate the precise date of birth, but due dates offer a rough timeline for delivery. Predictions may not be accurate due to variables such as irregular ovulation, variations in fetal growth, and variations in the length of the menstrual cycle. To estimate due dates, fertility experts or gynecologists employ a variety of techniques, such as maternal health exams and ultrasound measurements.

How does Prenatal Care Support Tracking the Due Date in Pregnancy?

Prenatal care entails routine check-ups with medical professionals, such as physical exams and ultrasounds, to evaluate the health of the mother, monitor the growth of the fetus, and monitor progress toward the due date. Throughout the pregnancy, these check-ups contribute to the mother’s and the unborn child’s well-being.

My Cycle isn’t 28 Days. Will this Due Date Calculator Work for Me?

Yes, the due date calculator generally works for everyone. Typically, the average cycle duration is 28 days. However, if it is shorter or longer than the average duration the due date may differ. For shorter menstrual cycle length the due date is said to be earlier. Whereas, if it is longer than the due date, the date moves further. This calculator takes into account the cycle length variations and LMP to predict the most accurate due date for your delivery.

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