Calculate ovulation
Our Ovulation calculator shows you quickly and clearly your expected ovulation and fertile days — based on the first day of your last period and your average cycle length.
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Frequently asked questions (FAQ) about the ovulation calculator
The computer offers a good orientation, but does not replace a medical diagnosis. Cycle length and ovulation may fluctuate on a monthly basis.
No The ovulation calculator is based purely on statistical averages.
A probabilityto recognize the fertile days. However, there is no guarantee.
Not necessarily. Stress, sleep, diet, travel, or illness can postpone ovulation.
If cycles fluctuate, the calculation can become less accurate. In this case, additional methods such as Ovulation tests or basal temperature measurement helpful.
Yes! By using it regularly, you recognize Patterns and Fluctuations
First day of your last period
Average cycle length (e.g. 28 days)


