Ovulation Day Calculator
Calculate your most fertile period and ovulation day based on your menstrual cycle.
This tool is for informational purposes only and does not replace medical advice. Consult a physician for decisions regarding your health.
days
Result
15 Haziran 2026
Estimated ovulation: Monday, 15 June 2026
Result in all units
Step-by-step solution
What Is the Ovulation Day?
Ovulation is the day a matured egg is released from the ovary and marks the period when the chance of conceiving is highest. In regular cycles it occurs about 14 days before the next period.
How is it calculated?
How Is the Ovulation Day Calculated?
- Enter the first day of your last period.
- Specify your average cycle length.
- Estimated ovulation = last period + (cycle − 14) days.
The most fertile period covers the 5 days before ovulation plus the ovulation day itself.
Frequently Asked Questions
Which are the most fertile days?
The 5 days before ovulation and the ovulation day itself are the most fertile period.
Does it give an accurate result with an irregular cycle?
In irregular cycles the estimate may deviate; in that case ovulation tests are more reliable.