Period Calculator
Predict your menstrual cycle, fertile window, and ovulation days
Your Menstrual Cycle Overview
Based on a 28-day cycle with 5-day periods
Next Period
October 28, 2023
Estimated start date
Ovulation Day
October 14, 2023
Most fertile day
Fertile Window
October 10 – 15, 2023
Best days to conceive
October 2023
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Today
Period Days
Fertile Days
Ovulation Day
Understanding Your Menstrual Cycle
💡 Cycle Phases
- Menstrual Phase: Days 1-5, period occurs
- Follicular Phase: Days 6-13, follicles develop
- Ovulation: Day 14, egg is released
- Luteal Phase: Days 15-28, uterus prepares
📊 Tracking Tips
- Record your period start date each month
- Note physical symptoms (cramps, mood changes)
- Track basal body temperature for ovulation
- Observe cervical mucus changes
- Use period tracking apps for convenience
Note: This calculator provides estimates based on statistical averages. Individual cycles can vary significantly. For medical concerns about your menstrual cycle, please consult with your healthcare provider.