Pregnancy Calculator - Tools for Pregnancy

Pregnancy Calculator

When you are trying for a baby, your monthly cycle is something you know by heart. You keep records of when you ovulate and when you have your period. Soon you can use these as some kind of informal calculator because you see patterns emerge - that you always have a monthly cycle of x days, and that you always ovulate on day y and that that your period always lasts z number of days.

Knowing this kind of information can help you to produce more forward planning pregnancy information once you are pregnant. Although it may be a few weeks before a doctor will confirm your expectancy and use his medical calculator to give you a due date for your baby, you will be able to use one of the many online calculators which will do this for you earlier.

Once you know you are expecting, the next thing you want to know is when the baby is due. Will it coincide with anyone's birthday in the family, or a holiday time, or will it be your favorite month, or busiest time at work - it seems vital that you know this due date as soon as possible, and at one of the many sites, you'll find this information in an interactive calculator.

Once you load up the right page, you will be asked to input the date of your last period. This you will know from your diary. Then you will be asked for length of your normal monthly cycle. This is usually around 28 days - some women have slightly longer, and some slightly less - if you don't know, use 28 days as an approximate guide.

The calculator at the site will automatically use these two numbers to calculate your due date. As with any date given by a doctor, or even an ultrasound test, the due date given by the website is an estimate as babies have a habit of coming when they are ready! Once you have your estimated due date however, you can then plan for the birth knowing that somewhere around that time your baby will appear.

Also read our article about Pregnancy Blood Tests