If you are pregnant, one of the first things you will want to know is when is your due date.  This is very important to anyone that is pregnant and you can learn this by looking at pregnancy calculator to let you know exactly when you baby will be due.  This is a great tool to use and you can even allow you to know exactly when to expect your newborn baby.  If you use one of these you can have a really good idea of when to expect your newborn.