Menstrual Cycle Management

Name: Menstrual Cycle Management - Ovulation Calculation
Creator: Girls Secret Team

Enter Cycle Information

Enter your menstrual cycle information, and we'll calculate your ovulation period, safe periods, and fertile window

Last Menstrual Period Start Date

Menstrual Cycle Length (days)

Days from the first day of one period to the first day of the next

Period Duration (days)

Number of days your period lasts

• Calculation results are based on average cycles; individual differences may affect accuracy
• Stress, illness, medications, and other factors may affect menstrual cycles
• Safe period contraception has a lower success rate; consider using additional contraceptive methods
• If you have irregular periods or other concerns, please consult a doctor promptly
• This tool is for reference only and cannot replace professional medical advice