Due Date Calculator quickly works out the date your baby is coming. Pregnancy is an exciting journey and planning for your arrival is paramount. Whether you are a first time mom or adding to your family, each pregnancy can be very different. Track your pregnancy with our weekly emails which also provide you with amazing insights in to your baby's development. Our pregnancy due date calculator uses the latest technology and algorithms to estimate when you will be giving birth.
Pregnancy, or gestation is calculated from the first day of your last period, also know as your LMP (last menstrual period).
The average length of pregnancy is calculated as 40 weeks, but the unborn baby usually spends 38 weeks in the womb. This is because pregnancy is counted from the first day of your last period instead of conception date, which usually occurs 2 weeks later. Most doctors will calculate your due date this way. So when you're 4 weeks pregnant, your baby was actually conceived about 2 weeks ago.
Due Date Calculator can estimate your due date in two ways; by only using your LMP or by using your LMP with your average cycle length. This is beneficial if you do not have a regular 28 day cycle.
On the next page you'll able to see the difference by providing your average cycle length to provide a more accurate due date.