If you want to become pregnant, the ovulation calculator tool can help you to find the most fertile days in which you can try for a baby. Usually ovulation is the process of release of eggs from the ovary, and it occurs 14 days prior to the beginning of your next menstrual cycle. You are most fertile during those ovulation days. Once the egg released from the ovary, it will only survive for 24 hours, whereas sperm can live inside the female genital for about 3 days. Even you have sex prior three days of your ovulation; there are higher chances to become pregnant.
Remember that ovulation can be affected by several factors such as sleep, stress, irregular periods, use of certain medications, etc. It is beneficial when you use ovulation calculator tool along with knowing about how your body works and observing the symptomswithin yourself that indicate ovulation is approaching.
While using the ovulation calculator tool, you should accurately know the length of your monthly cycle and the day of your last menstrual cycle. These tools will work effective for planning or to prevent pregnancy only when you have exact length of menstrual cycle each month and have correct ovulation.