Period Tracker

A period tracker is a tool that helps track and predict your menstrual cycle. By entering the start date of your last period and your average cycle length, you can estimate when your next period will begin, when you're ovulating, and identify your fertile window.

This tracker provides estimates based on average cycle data. While it's generally reliable for those with regular cycles, individual cycles can vary due to stress, illness, medication, or other factors. For the most accurate tracking, consider using this tool alongside other fertility awareness methods.

The fertile window is the period during your menstrual cycle when pregnancy is most likely to occur. It typically includes the 5 days before ovulation plus the day of ovulation itself. Sperm can survive in the female reproductive tract for up to 5 days, while an egg is viable for about 24 hours after ovulation.

Our tracker identifies your current cycle phase based on today's date and your inputs. The menstrual cycle has four main phases: the menstrual phase (when bleeding occurs), the follicular phase (when follicles develop), ovulation (when an egg is released), and the luteal phase (after ovulation until your next period).

While this tracker works best for those with regular cycles, you can still use it with irregular periods by entering your average cycle length. However, the predictions may be less accurate. If your periods are consistently irregular, we recommend consulting with a healthcare provider.

Yes, we take data security seriously. All calculations are processed locally in your browser and never sent to our servers. This ensures complete privacy and security of your personal health information.

While this tracker can help identify your fertile window, it should not be used as the sole method of contraception or conception planning. For family planning purposes, please consult with a healthcare provider for personalized advice.