Estimate your future period days and most probable ovulation days. Track your menstrual cycle with accurate predictions.
| Cycle | 🩸 Period | ❤️ Most Probable Ovulation Days |
|---|
The menstrual cycle is a series of changes that occur in your body as part of preparation for pregnancy. It is typically counted from the first day of one period to the first day of the next.
This is when bleeding occurs as the uterine lining sheds. It typically lasts 2-7 days. Your period marks the beginning of a new cycle.
Ovulation typically occurs ~14 days before your next period. The fertile window includes the 5 days before ovulation through 1-2 days after, when conception is most likely.
Note: This calculator provides estimates based on average cycle patterns. Individual cycles may vary. This tool should not be used as a form of birth control.