Estimate your ovulation date and fertile window
An ovulation calculator helps you determine your ovulation date and fertile window, making it easier to plan pregnancy. Ovulation typically occurs about 14 days before your next period. The fertile window is the time during your menstrual cycle when you are most likely to conceive, usually spanning the five days leading up to ovulation and the day after ovulation.
Simply enter the start date of your last period and the average length of your cycle to estimate your ovulation date and fertile days. Use this tool to track your fertility and take control of your reproductive health.