PeriodCalculator: A Tool for Women to Keep Track of Periods Online

Not all women find keeping track of their menstrual cycles easy. When periods hit unexpectedly, sudden mood swings occurs. Boyfriends and husbands are already familiar with how extreme these mood swings can be. Period Calculator is a tool that helps us in this regard.

keep track of periods

Period Calculator is a free website that lets users enter the date of the last period and then the usual cycle length. Clicking on the “Calculate” button then generates the dates for all upcoming periods for the next 12 months. These dates can be exported to a CSV file and then transferred over to any calendar service being used such as iCal. The site also has an educational flash animation explaining the menstrual cycle and female anatomy.

Whether you are a woman wanting to track your menstrual cycle or a boyfriend knowing which dates to tread cautiously with your girlfriend, Period Calculator will serve perfectly.

keep track of period online


  • Totally free to use.
  • Simple and easy to use.
  • Generates dates that can be exported to calendars being already used.
  • Similar tools: PMSBuddy and Go28days
  • Also see our article :  7 Websites Women Should Find Interesting.

Check out Period Calculator @

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