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Home › Articles › Tracking Your Fertility › Ovulation Calculator

Ovulation Calculator

What Day Do You Ovulate?

By iParenting Staff


It takes a little investigation to understand your menstrual cycle. There are several ways to determine when you are fertile: basal body temperatures, cervical mucus, ovulation predictor kits and the calendar method, to name a few. If you have regular cycles, the calendar method is a simple option.

Enter the date of your last menstrual period, and the calculator will reveal when you could be most fertile during the next three months. This tool also tells you when a baby conceived during any of these cycles would be due, and which celebrities and notables could share your baby's birthday!


First Day Of Last Menstrual Cycle*:

Month:
Day:
Year:

Average Length Of Your Cycle**: Days

Tips:
* The first day of your last menstrual cycle is the day your period begins to flow. Pre-menstruation spotting is not considered the beginning of your period.

** The average length of your cycle is the number of days from the first day of your period up to (and including) the day before your next period begins. Your personal average can be calculated based on your cycle length during the past several months. If you don't know the average length of your cycle, enter 28 days as this is considered average.


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