Ovulation Calculator
Track your fertility window and understand your cycle better with our ovulation calculator
Calculate Your Ovulation Window
28 Days
20 Days40 Days
Average cycle length is 28 days
Understanding Your Fertility Cycle
The Four Phases:
- Menstruation (Days 1-5): Low fertility, period occurs
- Follicular Phase (Days 6-11): Fertility starts to rise
- Ovulation (Days 12-16): Peak fertility, egg released
- Luteal Phase (Days 17-28): Fertility declines
Tips for Best Results:
- Track for 3-6 months for most accurate predictions
- Consider using ovulation predictor kits for confirmation
- Note physical signs like cervical mucus changes
- Remember: This is an estimate, not a guarantee