Ovulation Calculator
Track your fertility window and ovulation days for the next three cycles
Calculate Your Ovulation Day
The first day of your last menstrual period
Typical cycle lasts 21-35 days (average: 28 days)
Medical Disclaimer
This calculator provides estimates for educational purposes only. For accurate ovulation tracking and fertility planning, consult with your healthcare provider or use additional methods like basal body temperature monitoring.
Signs of Ovulation
Temperature Rise
Slight increase in basal body temperature
Cervical Mucus
Clear, stretchy, egg-white consistency
Ovulation Pain
Mild pain on one side (mittelschmerz)
Increased Libido
Heightened sexual desire
Fertility Tips
Have intercourse every other day during fertile window
Track your cycle for 3+ months for accuracy
Maintain a healthy diet and lifestyle
Consider folic acid supplementation
Important Notes
Sperm can survive up to 7 days in the body
Eggs survive 12-24 hours after ovulation
Only 5% of babies are born on their due date
Cycle length can vary by 1-2 days normally
Understanding Ovulation
What is Ovulation?
Ovulation is the release of a mature egg from one of your ovaries. It typically occurs around two weeks before the beginning of your next period, in the middle of your menstrual cycle.
The Fertile Window
- •Starts 7 days before ovulation (sperm can survive up to 7 days)
- •Ends 24 hours after ovulation (egg lifespan)
- •Total of 8 days when conception is possible
- •Highest chance on ovulation day and 2 days before
Cycle Calculation Method
Standard Method
Ovulation = Cycle length - 14 days
Example (28-day cycle)
Ovulation occurs on day 14 of the cycle
Fertile Window
Days 7-15 for a 28-day cycle
Tracking Methods for Better Accuracy
While calendar-based calculations provide good estimates, combining multiple tracking methods can improve accuracy significantly.