The Know Your Risk Act directs the Secretary of Health and Human Services to submit a report to Congress within 180 days examining breast cancer risk assessment tools, including their inaccuracies, gaps in use across different populations, and contributing factors. The report must outline a plan to create a single, comprehensive, publicly accessible breast cancer risk assessment tool and develop strategies to build consensus on this tool among patients, medical providers, institutions, and other stakeholders. The bill also modifies existing breast cancer screening grant programs under the Public Health Service Act to require states receiving federal grants to conduct evidence-based breast cancer risk assessments, implement standardized risk assessment tools in clinical settings, and develop educational programs about breast cancer risks. States must report to the federal government on the number of individuals receiving risk assessments, the number identified as at elevated risk, referrals for follow-up care, and any disparities in access among different populations. This legislation addresses the fact that while multiple breast cancer risk tools exist, there is no single widely recognized tool, and approximately 85 percent of breast cancer cases occur in people without family history.