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Due Date Calculator
written by Sally Akins

Using the Due Date Calculator

Enter the first day of your last period. If you don't know the exact date, calculate as close as possible.

The calculator will show you your estimated date of ovulation and the expected due date of your baby.

Keep in mind that this is an estimate based on your last menstrual period and estimated date of conception. Always consult your doctor to determine your correct due date.

Due-Date Calculator

Select First day of Last Period
/ /


Due date / /
Probable date
of ovulation
/ /
Beginning of
second trimester
/ /
Beginning of
third trimester
/ /