This user-friendly, interactive calculator is intended for use by women who have not had breast or ovarian cancer. It will help you to gain a good understanding of your level of risk for breast cancer compared to another woman of your age group.

The questions in this calculator include the most important risk factors for breast cancer based on a review of international evidence.

The calculator only takes a few minutes to complete, and the relevant risk factor is explained at each stage.

It is important to remember that the results of this calculator are not a guarantee of your risk levels, and that all women are at risk for breast cancer, no matter what their risk category. Some women at increased risk never develop breast cancer, and some women at low risk may develop the disease.

* By clicking this checkbox, you are acknowledging you have read and understand the disclaimers regarding the use of this calculator.


This risk resource has been developed to help you understand your level of risk for breast cancer. Factors affecting risk for breast cancer are very complex, and any woman may or may not develop breast cancer regardless of her level of risk. However this resource will help you to understand more about risk factors for breast cancer, which risk factors you can influence, and what to do about them. Your risk and breast cancer is not intended to provide medical advice, nor to replace medical examinations or the advice or diagnosis of a doctor or health professional. Women concerned about their risk should see their GP.