Ovulation Calculator
The ovulation calculator estimates when you are most likely to ovulate based on your cycle length and last period date. Ovulation typically occurs 14 days before the next expected period.
Your fertile window spans approximately 5 days before ovulation and 1 day after, as sperm can survive up to 5 days in the reproductive tract.
Understanding Your Fertile Window
Ovulation usually occurs around day 14 of a 28-day cycle. The fertile window is approximately 6 days: the 5 days before ovulation and the day of ovulation itself.
Factors Affecting Ovulation
Stress, illness, weight changes and travel can shift ovulation timing. This calculator provides estimates based on average cycle patterns and should be used as a guide.
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