PregnancyDueDate
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Pregnancy DUE DATE CALCULATOR

Calculate your pregnancy due date and explore personalized weekly milestones throughout your pregnancy journey.

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Calculate your Due Date

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MTWTFSS
Average Cycle Length28 days
Short (20)Average (28)Long (45)

Your Estimated Due Date

Regular prenatal checkups help track your baby’s growth and health.

This is an estimated date. Your actual delivery date may vary by a few days or weeks.

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Everything You Need for a Healthy Pregnancy

Comprehensive tools, expert guidance, and personalized support to help you through every stage of your pregnancy journey.

Due Date Calculator

Due Date Calculator

Calculate your pregnancy due date accurately using multiple methods, including last menstrual period (LMP), conception date, IVF transfer, or ultrasound details.

Expert Articles & Guides

Expert Articles & Guides

Access comprehensive pregnancy guides, trimester-by-trimester information, and expert-written articles to understand baby development and maternal health.

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Doctor Consultations

Book online consultations with certified OB-GYNs and pregnancy specialists for trusted medical advice and personalized care.

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What is an estimated due date during pregnancy?

Your due date, also known as the estimated due date (EDD), is the approximate date when your baby is expected to be born. Knowing your pregnancy due date helps you plan antenatal visits, prepare for delivery, and understand your pregnancy timeline better.

However, it’s important to remember that the due date is only an estimate, not a guaranteed delivery date. Every pregnancy is different, and only around 4% of babies are born exactly on their estimated due date, with most arriving a little earlier or later.

Pregnancy Calendar

First Day of Your Last Menstrual Period (LMP)

Most pregnancies last about 40 weeks, which is why doctors usually calculate the due date by counting 280 days from the first day of your last menstrual period (LMP). This method is widely used and helps estimate your expected delivery date accurately.

Standard Formula: Due Date = First day of LMP + 280 days
Another commonly used approach is Naegele’s Rule, where you subtract three months from the first day of your last period and then add seven days.

Naegele’s Rule Formula: Due Date = LMP − 3 months + 7 days
You can simply select Last Period in our Pregnancy Due Date Calculator to get your estimated due date. This is the same method most healthcare providers use during early pregnancy.

First day of last period
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Conception Date Method

If you’ve been tracking ovulation signs or using ovulation predictor kits, you can calculate your pregnancy due date based on your conception date. This method is helpful when you know the approximate day fertilization occurred.
To estimate your due date, simply add 266 days to your conception date.
Formula: Due Date = Conception Date + 266 days
You can also choose Conception Date in our Pregnancy Due Date Calculator to get instant results. If you’re unsure of the exact date, our Conception Date Calculator can help identify the most likely conception day.

Ultrasound Scan Method

If you’re unsure about your last menstrual period, ovulation date, or exact conception timing, an early pregnancy ultrasound can help estimate your due date accurately. This method is often used during the first trimester and can sometimes be more precise than LMP-based calculations.
You can simply select Ultrasound in our Pregnancy Due Date Calculator to estimate your expected delivery date based on your scan results.
Not everyone has an early ultrasound. While some doctors recommend it routinely, others may suggest it only if:
  • Your menstrual cycles are irregular
  • You are 35 years or older
  • You have a history of miscarriage or pregnancy complications
  • Your due date cannot be determined clearly from LMP or physical examination

Other Factors That Help Confirm Your Due Date

In addition to ultrasound results, healthcare providers may use the following indicators to assess how far along your pregnancy is:
Pregnancy milestones, such as detecting the baby’s heartbeat (usually around weeks 9–10) and feeling the first fetal movements (commonly between weeks 18–22), can help confirm dating accuracy.
Fundal height measurements, taken at each prenatal visit, help track uterine growth and support due date estimation.
Uterine size, assessed during early pregnancy examinations, may also help in determining the estimated due date (EDD).

Need Help?

Speak to a Gynaecology specialist today.

Frequently Asked Questions

You can try to plan your pregnancy by timing conception, but a due date is only an estimate. Using an ovulation calculator can help identify fertile days, though the exact delivery date cannot be predicted.

Yes, due dates can change as pregnancy progresses based on ultrasounds and growth measurements. This is common, and your doctor will explain any adjustments during checkups.

If you're expecting twins or multiple babies, your estimated due date may be different from a singleton pregnancy. Multiple pregnancies often deliver earlier, and your doctor may adjust your due date based on ultrasound findings and medical monitoring.

Most women have their first pregnancy ultrasound between 6 and 8 weeks to confirm the pregnancy and check viability. A dating scan is commonly done between 8 and 12 weeks to estimate the due date more accurately.

Naegele's Rule is a standard method used to calculate the estimated due date. It works by adding 7 days to the first day of your last menstrual period (LMP) and then adding 9 months.

Yes. If your menstrual cycle is shorter or longer than the average 28 days, your due date may vary. Due date calculators that consider your cycle length can provide a more accurate estimated delivery date.

Yes. The pregnancy tracker is designed to support you throughout all three trimesters, providing week-by-week updates, development milestones, and helpful pregnancy insights.

Yes. You can share your pregnancy details and calculated due date with your doctor or healthcare provider to help guide prenatal care and medical consultations.

Yes. Your personal and pregnancy-related information is kept secure and confidential. Data protection measures are in place to ensure privacy and safeguard your health information.

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