Twin Pregnancy
Due Date Calculator


Having Twins? This is an estimated pregnancy due date calculator, a fun way to discover the possible due date of your twin babies.

How to Use this Calculator

All you need to do is fill in the information to the best of your knowledge into the following fields:

Last Menstrual Period.

Average Length of Cycles, many women are between 28 and 31.

Average Luteal Phase Length, this is the part of the cycle that starts at ovulation and ends the day before your next menstruation, commonly lasts 14 days.So if you are unsure then type in 14 days.

Once you have done this click the 'Calculate' button, this will reveal your estimated conception, due date and fetal age.

When using this calculator keep in mind that this is actually for a pregnancy that lasts up to 40 weeks. A twin pregnancy averages between 34 and 38 weeks.

Calculate Now!

Last Menstrual Period:        
                              (MM/DD/YYYY format)

Average Length of Cycles:      (22 to 45)
                              (defaults to 28)

Average Luteal Phase Length:   (9 to 16)
                              (defaults to 14)

Estimated Conception: Estimated Due Date: Estimated Fetal Age:

When carrying twins the arrival of your precious two is unpredictable so they could arrive much early than expected.

Read through the Early Labor Signs and Preterm Labor for a heads up on being prepared for the birth of your newborn twins.

More information on this site:

| What Are Your Chances of Having Twins? | Twin Pregnancy Guide | Twins Ultrasound Images | Vanishing Twin Syndrome | Pregnancy Stretch Marks | Twin Pregnancy FAQ | Healthy Pregnancy Diet |


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