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Like To Know When Your Baby Will Born?

Use this calculator to determine the milestones during your pregnancy.

Enter the first day of your last menstrual period, then press 'Calculate!'.

Month: Day: Year:

Conception likely occurred around:
(Approximately two weeks after
your last menstrual period)
Period of greatest risk for birth defects:
Five to ten weeks gestational age (number of weeks since your last menstrual period)


Beginning of organ formation:

Five Weeks
Gestational Age

Major organs have formed:

Ten Weeks
Gestational Age

End of first trimester
(12 weeks) - Risk of miscarriage decreases:

11 to 14 Weeks
Gestational Age

Some preemies can now survive (23 weeks):

23 Weeks
Gestational Age

End of second trimester (27 weeks): . .
Estimated due date (40 weeks - full term): . .