Ovulation Calculator

Typically, a woman has a menstrual cycle that lasts 28 days. Many women have longer or shorter cycles, or even cycles of inconsistent lengths of time. This is quite common, however it may pose difficulty when trying to predict the best time to get pregnant. A rule of thumb to remember is that a woman is most fertile approximately 13 to 15 days prior to the first day of her next menstrual cycle. This fertile period occurs around the time of ovulation when the woman’s body releases a new egg.

A woman’s egg is only fertile and in the ovulation phase for approximately 24 hours. However, a man’s sperm can live within a woman’s reproductive tract for approximately 3-5 days. Therefore, intercourse can occur 3-5 days prior to ovulation and may achieve a successful conception.

To help you better gauge your ovulation cycle we have provided this easy to use free ovulation calendar calculator.

Follow the instructions below. Be patient as the page reloads with your personal ovulation calendar. After calculate we suggest you print out your ovulation prediction calendar for future reference. If you often experience interrupted or irregular cycles, you may choose to bookmark this page and recalculate your cycle with our ovulation predictor on a monthly basis.

Ovulation Calculator + Ovulation Predictor + Due Date Calculator + Conception Calendar

Please select the first day of your last menstrual period:

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Usual number of days in your cycle: