Every pregnant woman is much excited about knowing what would be the date of delivery. This way, the pregnant women make use of the IVF calculators online to calculate personalized predictions about the date of having a live birth. The IVF calculators make use of the simple terms like the menstrual cycle date, date of ovulation (the days when you are most fertile) and the date of conception to estimate the expected date of delivery.While IVF calculators are available in every pregnancy and birth related website online, many do not know about how they work, how to make use of the information, how the results can be and more. Here is detailed information about IVF calculators that everyone must know.How do IVF Calculators Work?As mentioned earlier IVF calculators can be used to check the exact ovulation date, date of conception and even they can predict the date of live childbirth. However the results are purely based on the authenticity of the information you enter. The date of ovulation can be guessed based on the last day of your last to last periods and the first day of your last periods. For date of delivery the IVF calculators make use of the date of conceptions or the first date of your last periods. The date of delivery can be +15 or -15 from the expected date of delivery flashed in the IVF result page.How to Use Them?Woman for whom pregnancy is conformed and also woman trying to conceive with a series of fertility treatment can make use of the Pregnancy IVF calculators online right from day one. These calculators are available for free at almost all online fertility websites.Once you locate the IVF calculator, it flashes a total of nine situations among which one could be your current situation or a hypothetical situation. The situations can be your last periods date, the date of conception, the date of egg collection or ovulation and more. Now enter the right date of conception or egg collection in order to get the accurate results. In case, if you dont know your date of conception, you may also enter your last periods date.The results will be flashed in the next page of the IVF calculator. If case if you have conceived the flashed result can be considered as your date of expected delivery. The IVF results also flash which segment of pregnancy you are currently in. say for example if you are 8 weeks pregnant then it is the first trimester of pregnancy and will offer your week-by-week pregnancy guide and fetal development guide to understand more about this phase.However it is important for every woman to understand that the online IVF calculators can be used only as guides and in no means they can be replaced with the advice of your fertility expert.Also Consider ThisFew research studies have proven that about 80% of IVF predictions have proven to be accurate in women below 30 years of age. However for other who are above 30 years of age the IVF predictions are successful only for one woman among the three. To know all about fertility tests including IVF tests with accurate results you can seek the services of fertility centers in your city. However fertility testing is also a part of the services offered by the adoption agencies, sperm banks and the fertility centers all over the world. One can avail these services by contacting them online and also by visiting the official website of these agencies. A simple online research at http://www.parentstomorrow.com will help you in landing at the web page of the fertility centers, adoption agencies and even sperm banks in your country.