Pregnancy Due Date Calculator

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Enter the information below to estimate your conception date, due date, and fetal age.

First day of your last menstrual period Enter the date in MM/DD/YYYY format.

Average Length of Cycle Enter a value from 22 to 45 days. Defaults to 28 days.

Average Luteal Phase Length Enter a value from 9 to 16 days. Defaults to 14 days.

Estimated Conception

Estimated Due Date

Estimated Fetal Age