Curious to know your due date?

Our easy-to-use pregnancy calculator is the number one most popular way to calculate your due date based on the date of your last menstrual period.

Calculate Based On:

First Day of Last Menstrual Period*

Average Length of Cycles

From first day of your period to the first day of your next period. Ranges from:22 to 44. Default=28

Optional: Leave 28 if unsure

This is not a diagnosis. The calculations that are provided are estimates based on average

Pregnancy Due Date:

Estimated Date of Conception: