Ovulation Calculator
Calculate your fertile window and ovulation date to optimize conception chances or track your cycle
Cycle Information
Enter your menstrual cycle details
Typical range is 21-35 days. Count from first day of one period to first day of next.
How many days does your period typically last?
Time from ovulation to next period. Usually 12-16 days, average 14.
How to Track Your Cycle
- • Mark the first day of your period as Day 1
- • Count until the day before your next period starts
- • Track for 3-6 months for accurate averages
- • Note any irregularities or changes
Your Fertility Calendar
Ovulation prediction and fertile window
Day 552 of your cycle
Pre-menstrual - Low fertility
Jan 15
Ovulation Date
Jan 29
Next Period
Fertile Window
Jan 10 - Jan 15
Best time for conception (6 days including ovulation day)
Current Cycle Phases
Menstrual Phase
Jan 1 - Jan 5Menstruation occurs, hormone levels are low
Follicular Phase
Jan 6 - Jan 14Follicles develop, estrogen rises
Ovulation
Jan 15 - Jan 15Egg is released, peak fertility
Luteal Phase
Jan 16 - Jan 28Progesterone rises, preparing for pregnancy
Recommendations
Track your basal body temperature for better accuracy
Monitor cervical mucus changes throughout your cycle
Maintain a healthy lifestyle with regular exercise and nutrition
Consider using a fertility tracking app for detailed monitoring
Conception Tips
- • Have intercourse every 1-2 days during fertile window
- • Sperm can survive up to 5 days in reproductive tract
- • Egg survives 12-24 hours after ovulation
- • Consider using ovulation predictor kits
- • Track basal body temperature
- • Monitor cervical mucus changes
Signs of Ovulation
- • Clear, stretchy cervical mucus
- • Slight increase in basal body temperature
- • Mild pelvic or abdominal pain
- • Breast tenderness
- • Increased libido
- • Light spotting
- • Positive ovulation test
Important Notes
This calculator provides estimates based on average cycles. Individual variations are normal.
- • Stress can affect ovulation timing
- • Illness may delay ovulation
- • Some women ovulate irregularly
- • Consult healthcare provider for concerns