Ovulation
Calculator
Estimate ovulation dates, fertile windows, and best conception days based on menstrual cycle length.
Input
Current Cycle
Estimated Ovulation
Jul 3, 2026
Fertile Window
FertileJun 28, 2026 – Jul 3, 2026
Most Fertile Days
PeakJul 1, 2026 – Jul 3, 2026
Ovulation Day
OvulationJul 3, 2026
Next Period
PeriodJul 17, 2026
Luteal Phase Starts
Jul 4, 2026
How It Works
Ovulation typically occurs about 14 days before the start of your next period (the luteal phase). The fertile window spans 6 days: the 5 days before ovulation plus ovulation day itself.
The most fertile days are the 2 days before ovulation and ovulation day, when conception is most likely.
This calculator provides estimates based on average cycle patterns. Individual cycles may vary. Consult a healthcare provider for personalized fertility guidance.
Multi-Cycle Timeline
| Cycle | Ovulation | Fertile Window | Next Period |
|---|---|---|---|
| Cycle 1 | Jul 3, 2026 | Jun 28, 2026 – Jul 3, 2026 | Jul 17, 2026 |
| Cycle 2 | Jul 31, 2026 | Jul 26, 2026 – Jul 31, 2026 | Aug 14, 2026 |
| Cycle 3 | Aug 28, 2026 | Aug 23, 2026 – Aug 28, 2026 | Sep 11, 2026 |