BMI Calculator
Due Date Calculator
Enter the first day of your last menstrual period, then press 'Calculate.
 
  Month: Day: Year:
 


    Calculated Result

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)

                     to
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):