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Ovulation Date Calculator

A woman is able to become pregnant (fertile) only during a certain part of her monthly cycle. That is just before and during ovulation. By learning when you ovulate, you can predict when you’re likely to be fertile. This calculator gives approximate ovulation dates and fertile times for women who have regular periods. (Regular periods mean having a period every 21 to 40 days.) Fertility charting, basal temperature tracking, and purchased ovulation test kits can also be used to help predict a woman’s fertile times. These are especially useful if a woman has irregular periods.

Please note that the date you enter in the calculator may result in an ovulation date that has already passed. This will occur if you are nearing your next menstrual start date.

This calculator is not meant for women who are already pregnant. It cannot and should not be used as an aid to preventing pregnancy. This calculator is provided for educational purposes only. It is not intended as a substitute for professional health care. Always consult with a healthcare provider for advice concerning your health.

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This calculator is not intended to replace the evaluation of a healthcare professional.

Online Medical Reviewer: Burd, Irina, MD, PhD
Online Medical Reviewer: Kanipe, Jennifer, RN, BSN
Date Last Reviewed: 8/16/2015
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Our web site is designed to provide general information to educate users about programs and services, which may be available through our hospitals. The web site is not intended to provide medical advice nor should the information be used to attempt to determine the presence, absence or severity of any illness or medical condition which may be perceived or experienced by the user of this site. If you have or suspect you may have an illness or condition which you believe requires medical attention, we recommend you call your primary care physician. If you believe you are experiencing a medical emergency please call "911" (or your local medical emergency number) or seek immediate care from the nearest hospital Emergency Department. The provision of information to users of this web site is not intended as an inducement or to otherwise influence a person's decision to order or receive any item or service from a particular provider, practitioner or supplier that is reimbursable under Medicare, a state healthcare program (e.g., AHCCS) or any other healthcare plan.

Physicians are members of the medical staff at each facility, but are independent contractors who are neither employees nor agents of Carondelet Medical Group; and, as a result, Carondelet Medical Group is not responsible for the actions of any of these physicians in their medical practices.