Pregnancy Due Date Calculator

Analyse Your Pregnancy Status

Want to know the expected date of delivery? No worries. Our due date calculator can help you with that. Just type in your last menstrual period, conception date, or due date, and get to know the expected birthdate of your little one.

Step 1 of 1

How do you wish to progress to know
about your pregnancy?

Last Period Date

Conception Date

Due Date

How to Use the MamyPoko Pregnancy Due Date Calculator

Welcome to the MamyPoko Pregnancy Due Date Calculator! Pregnancy is an exciting journey, and knowing your estimated due date helps you plan and prepare for the big day.

Our calculator makes this process simpler by giving you three convenient ways to calculate your due date:

Using the First Day of Your Last Menstrual Period (LMP)

Enter the first day of your last period.
The calculator will add 280 days (40 weeks) to this date to provide an estimate.
This method is widely used for pregnancies with regular cycles of about 28 days.

Using the Conception Date

If you know the exact date of conception, input it into the calculator.
The tool will add 266 days (38 weeks) to determine your estimated due date.
This option is ideal for those tracking ovulation or undergoing assisted reproductive techniques.

Using a Confirmed Due Date

Already have a due date from your doctor or an ultrasound?
You can use our calculator to verify this date against other methods.

With these methods, you can track your baby’s development and plan your milestones effectively.

Which is the Best Method for You to Calculate Your Due Date for Pregnancy?

There are multiple ways to estimate your due date, each suited to different scenarios. Let’s explore them:

Based on the First Day of Your Last Period (LMP)

This is the most common method. Count 40 weeks from the first day of your last period. Since conception typically occurs about two weeks after your period begins, this gives a good approximation for most pregnancies.

Based on the IVF Transfer Date

For pregnancies achieved through in-vitro fertilization (IVF):

Add 266 days to the date the embryos were transferred (if it’s a Day 3 transfer).
For a Day 5 transfer, add 261 days.

This calculation is precise since the date of embryo implantation is known.

Based on an Early Ultrasound Scan

Doctors may use an early ultrasound scan (usually during the first trimester) to determine the gestational age.

The scan measures the baby’s crown-to-rump length, which is highly accurate for predicting due dates.
This method is particularly useful for women with irregular cycles or those who are unsure about their last menstrual period.

By understanding these methods, you can choose the one that best fits your pregnancy journey.