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Pregnancy Date Calculator

Input Data

ONLY REQUIRED FIELD:
First Day of Last Menstrual Period:
(First day of bleeding)

(MM/DD/YYYY)

Average Length of Cycles:
(From first day of your period to the first day of your next period)

(22 to 44 default = 28)

Output Data

Expected Fertility Window:

to

Expected Conception Date:

Expected Gestational Age:
(how far along your pregnancy is)

Expected Due Date:
(only 5% born on their due date!)

This is not a conclusion. The calculations that are provided are estimates based on averages.

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