Ovulation Calculator
Identify your most fertile days and increase your chances of getting pregnant.
Average is 28 days.
Enter your details to see your fertile days.
Planning a pregnancy?
A pre-conception checkup with a gynecologist can help ensure a healthy pregnancy.
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Connect with top-rated gynecologists for personalized advice on fertility and ovulation.
Ovulation is the release of a mature egg from the ovary. It usually happens about 14 days before your next period starts.
Your "fertile window" includes the day of ovulation and the 5 days before it. Sperm can survive for up to 5 days, so having sex during this window maximizes chances of conception.
If you are under 35 and have been trying to conceive for a year without success, or over 35 and trying for 6 months, it is recommended to see a fertility specialist.
Irregular periods can make ovulation prediction difficult. A gynecologist can help regulate your cycle.