Ovulation Calculator
Estimate your most fertile days and ovulation period.
About Ovulation & Fertility
Ovulation is the part of the female menstrual cycle where a mature ovarian follicle discharges an egg. Knowing when you ovulate can help you plan or avoid pregnancy.
What is the Fertile Window?
The fertile window is the time in a woman's cycle when pregnancy is possible. It includes the day of ovulation and the five days leading up to it. Conception is most likely in the 2-3 days before ovulation occurs.