Ovulation Calculator
Ovulation & Fertile Window
Formula
Ovulation Day ≈ Cycle Length - 14 | Fertile Window = Ovulation Day - 5 to Ovulation Day + 1
Frequently Asked Questions
When do I ovulate?
Ovulation typically occurs about 14 days before your next period. For a 28-day cycle, that's around day 14. For a 32-day cycle, around day 18. The fertile window is about 5 days before ovulation and 1 day after.
How can I track ovulation?
Methods include: ovulation predictor kits (OPKs), basal body temperature tracking (temp rises 0.4-0.8°F after ovulation), cervical mucus monitoring, and fertility tracking apps.
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