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📅 Ovulation Calculator
Estimate your fertile window and ovulation date based on your menstrual cycle.
How Is Ovulation Estimated?
Ovulation typically occurs about 14 days before your next period. For a 28-day cycle, this means ovulation around day 14. For longer or shorter cycles, the ovulation day shifts accordingly. The fertile window spans 5 days before ovulation through 1 day after.
Understanding Your Fertile Window
Sperm can survive up to 5 days in the reproductive tract, while an egg is viable for 12-24 hours after ovulation. This creates a fertile window of approximately 6 days. Tracking ovulation can help with both conception planning and natural family planning.
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