Ovulation & Fertility Calculator
Estimates your fertile window and ovulation day from the first day of your last period and your cycle length, and projects the next six cycles with the due date for a conception in each.
Read the full guide to this tool
Results
Notes
- Ovulation lands roughly luteal-phase days before the next period; the fertile window is the five days before plus the day of ovulation.
- Cycle timing varies month to month — combine this with ovulation tests or temperature tracking if you need precision.
- This is an educational estimate, not medical advice; consult a professional for decisions about your health.
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