Fertile Window Calendar
Track your most fertile days with a visual monthly calendar designed for conception planning.
Calendar Settings
Calendar Legend
October 2025
Enter your last period date to generate your fertility calendar
Frequently Asked Questions
How many days each cycle am I fertile?
Most women are fertile for about 6 days each cycle. This includes the 5 days before ovulation (when sperm can survive in the reproductive tract) plus the day of ovulation itself. However, the 2-3 days leading up to and including ovulation represent your peak fertility period when conception is most likely to occur. The exact timing depends on your individual cycle length and ovulation patterns.
Can I export my fertile days to a calendar?
Yes! Our calendar tool allows you to export your fertile days in two formats. You can download a CSV file that opens in Excel or Google Sheets for tracking and analysis, or export an ICS calendar file that you can import directly into Google Calendar, Outlook, Apple Calendar, or any other calendar application. This makes it easy to keep track of your fertile windows alongside your other appointments and plans.
Medical Disclaimer
This fertility calendar provides estimates based on average cycle patterns and should not be used as the sole method for family planning or contraception. Individual cycles vary, and many factors can affect ovulation timing. For medical advice or concerns about fertility, please consult with a qualified healthcare provider.