Ovulation Calculator
Your fertile window — the six days each cycle when pregnancy is possible — for the next four cycles.
Your details
Counted from the first day of one period to the first day of the next.
Your next fertile window
Oct 25 – Oct 30
Most likely ovulation: Oct 30, 2026| Fertile Oct 25 – Oct 30 | Period Nov 13 |
|---|---|
| Fertile Nov 22 – Nov 27 | Period Dec 11 |
| Fertile Dec 20 – Dec 25 | Period Jan 8 |
| Fertile Jan 17 – Jan 22 | Period Feb 5 |
Calendar estimates assume ovulation about 14 days before your next period. Cycles vary — ovulation test kits or basal body temperature tracking pinpoint it more precisely.
How this is calculated
The results provided by this tool are estimates for general educational purposes only, and are not medical advice, diagnosis, or treatment. Always talk with a qualified healthcare provider about your individual health. Never disregard or delay seeking professional medical advice because of something you have read here.