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Due Date Calculator

Online due date calculator helps to predict the arrival date of your baby, i.e. when you will give birth to your baby, based on your first day of last period and your menstrual cycles.

Calculator

Select and input the first day of your last period, and select your length of cycles, then click "Calculate" to see your estimated due date.
First Day of Your Last Period:
mm/dd/yyyy
Average Length of Cycles:

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Related Information

The due date is estimated to be 280 days (40 weeks) after the first day of your last menstrual period. However, due to different body conditions, the due date may vary greatly. Only 5% of women deliver on their estimated due dates, and many first-time mothers find themselves waiting up to 2 weeks after their due date for their baby to arrive. Also, there are some mothers who may deliver ahead of the due date, and often can up to 2 weeks.


More Information: More about Pregnancy