Ovulation Calculator
Estimate your fertile days and ovulation date.
Ovulation calculator and fertile days tracker
The ovulation calculator estimates your most fertile days based on your menstrual cycle length. Ovulation typically occurs 14 days before your next period.
The fertile window lasts approximately 6 days. Knowing these days helps you plan a pregnancy or better understand your reproductive cycle.
Factors like stress, weight changes, or medications can affect ovulation. For greater accuracy, combine this tool with other tracking methods.
Frequently asked questions
When does ovulation occur?
Usually 14 days before your next period. In a 28-day cycle, around day 14.
How many fertile days do I have?
The fertile window lasts about 6 days: 5 days before ovulation and the day of ovulation.
Is it reliable as a contraceptive method?
It's not a reliable contraceptive. Cycles can vary and ovulation may occur earlier or later than expected.