Normal Pregnancy lasts about 40 weeks since the 1st day of your
last menstrual cycle. Have you been already confused? Forget
about calculations in your mind and notes in diaries – use our
pregnancy calculator to find out the date of birth of your baby.
Using the Pregnancy Calculator helps to calculate the probable
conception date, to estimate how long have you been pregnant, to
know the fetal age and much more. All you need is to enter the
date of your last menstrual cycle and the amount of menstrual
days in the data field, and push the button. On average a
menstrual period lasts during 28 days, but it can differ from 22
to 44 days.