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Period calculator

Use WomanLog's Period calculator to predict the next period days and to understand your menstrual cycle.

First day of your last menstrual period
How long did it last (days)?
Your average cycle length (days)
How long did it last (days)?
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Your average cycle length (days)
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Period Calculator - Visual representation of a tool to estimate menstrual cycles, ovulation, and fertility for reproductive planning
Cycle tracking with an accurate period calculator can help you better understand your body and your health. Learn the benefits of using a period calculator and try it for free on WomanLog!
Visualizing Influence: The Impact of Hormones During the Menstrual Cycle.
Reproductive-age women experience a menstrual cycle roughly every month. This cyclical process is connected to all the other systems that keep our bodies running and support our capacity for reproduction. The menstrual cycle is sensitive to the other changes that occur in our lives—environmental, emotional, or other.
Insights into Menopause: Understanding Signs, Symptoms, and Causes.
Menopause is the time in the life of a woman when her periods stop, signalling the end of the reproductive function of her body. Both menopause and perimenopause (the transition to menopause) are associated with a number of symptoms that can significantly affect a woman’s quality of life.