Pregnancy Due Date Calculator

Congratulations on your pregnancy and welcome to our free pregnancy calculator & Estimated Conception calculator online.

Simply fill in the date of your last menstrual period into the pregnancy due date calculator and it will work out your estimated due date, estimated conception date and the estimated fetal age.

Calculate your due date

Last Menstrual Period:


                              (MM/DD/YYYY format)

Average Length of Cycles:
 (22 to 45)

                              (defaults to 28)

Average Luteal Phase Length:
 (9 to 16)

                              (defaults to 14)


Estimated Conception:


Estimated Due Date:


Estimated Fetal Age:

Healthy Mum – Conception Due Date Pregnancy Calculator Online