Blood Pressure Calculator

How the Blood Pressure Calculator Works

Blood pressure is one of the most important indicators of heart and cardiovascular health. This Blood Pressure Calculator uses your systolic and diastolic readings to classify your blood pressure level into well-known categories such as Normal, Elevated, Hypertension Stage 1, Hypertension Stage 2, and Hypertensive Crisis. These categories are based on commonly referenced clinical guidelines and help you understand whether your blood pressure is within a healthy range.

Systolic blood pressure (the top number) measures the pressure in your arteries when your heart beats. Diastolic blood pressure (the bottom number) measures the pressure when your heart rests between beats. Both readings are essential for evaluating cardiovascular health. Even if one number is elevated, your overall category may move into a higher risk range.

This calculator works entirely inside your browser. You simply enter your systolic and diastolic readings, and the tool instantly assigns a classification based on standard ranges. For example, readings below 120/80 are typically considered normal, while values above 140/90 fall under Hypertension Stage 2. Extremely high readings, such as systolic above 180 or diastolic above 120, may indicate a hypertensive crisis and require immediate medical attention.

This tool is helpful for individuals monitoring their blood pressure at home, students learning about cardiovascular health, or anyone wanting a quick reference. It is not a substitute for professional evaluation, but it offers a simple and clear understanding of where your readings fall.

Frequently Asked Questions