Pregnancy Due Date

Last menstrual period:
Conception occurred: (about two weeks after last menstrual period)
First trimester ends (12 weeks):
Second trimester ends (27 weeks):
Estimated due date (40 weeks):
Calculate due date
Estimated due date (40 weeks):
   
Last menstrual period:
Conception occurred: (about two weeks after last menstrual period)
First trimester ends (12 weeks):
Second trimester ends (27 weeks):
Calculate due date

Adapted from MedCalc.com.