Ovulation Calculator
The Ovulation Calculator estimates the most probable ovulation/fertile window as well as other related dates. The estimations are based on a woman's last period date. This calculator should not be used as a form of birth control.
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Modify the values and click the Calculate button to use
Result
| Cycle | Ovulation Date | Fertile Window | Next Period | Pregnancy Test | Due Date |
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Note: Ovulation typically occurs about 14 days before the start of the next menstrual period. The fertile window spans approximately 5 days before ovulation and 1 day after. These are estimates only; individual cycles may vary. Consult a healthcare professional for personalized advice.