What is the Fertile Window Calculator?

The Fertile Window Calculator is a tool that helps individuals identify their most fertile days during the menstrual cycle. By entering the date of the last period and the average cycle length, the calculator estimates the ovulation date and the fertile window. This is useful for family planning, fertility awareness, or understanding menstrual health.

How to Use:

1. Enter Last Period Date: Input the start date of your last menstrual period.
2. Enter Cycle Length (days): Input the average length of your menstrual cycle in days, e.g., 28.
3. Click “Calculate”: The tool calculates the ovulation date and the fertile window based on your inputs.
4. Review Result: The output displays the last period, estimated ovulation date, and fertile window, along with a tip noting that the fertile window may vary slightly based on individual cycle variations.