Pregnancy Date Calculator

When was your last menstrual period: Year Month Day
Due date:
to
Conception date:
End of early pregnancy (12 weeks):
End of mid-term pregnancy (27 weeks):
End of pregnancy (40 weeks):

The due date is the date that a pregnant woman is expected to give birth. The due date is not the exact date of delivery. Scientists have calculated that only about 53% of women give birth on the due date. Since it is difficult for every pregnant woman to accurately determine the time of conception, medical regulations stipulate that the due date is calculated from the first day of the last menstrual period. The entire pregnancy period is 280 days, 10 gestation months (each gestation month is 28 days).