The Blood Pressure Calculation web application was designed and developed at the request of Shahroud University of Medical Sciences to facilitate the management of blood pressure for patients. Users can register in the system by providing information such as date of birth, weight, and height. Whenever they need to check their blood pressure, they can log in and enter their systolic and diastolic blood pressure values to see their Z-score. Additionally, users can view visual charts illustrating their condition. In future versions, the application will provide personalized recommendations based on each user's condition and include a history section to track blood pressure status over time.