Estimated due date

Please note:

Your computer shows today's date as . The calculator uses this date to calculate gestational age. If it is wrong, correct your computer's date settings before calculating.

 
Enter the first day of your last menstrual period:
 

Day: Month: Year:

 

Based on these details, you are currently weeks days pregnant.

Margin of error: ±3 days

 Your estimated due date is:
.

 

These dates depend on the accuracy of your last menstrual period date. Misremembering the date, delayed ovulation, irregular periods or bleeding during pregnancy may mean that it does not match your gestational age. It should therefore be confirmed against an ultrasound, preferably performed in the first trimester..