Calculate the due date of your baby

When will my baby arrive?

One does not always know the exact day of conception – and even if known, the time of sexual intercourse still does not reveal exactly when fertilisation took place.


Assuming that there are about 266 days between fertilisation and the birth of your baby, it is possible to calculate the approximate due date. By entering the first day of your last period in our due date calculator, you'll find out whether your baby will be born at Christmas or at New Year.