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Blood Pressure Calculator

Enter your systolic and diastolic reading to instantly get your Mean Arterial Pressure (MAP), Pulse Pressure, and your AHA blood pressure category โ€” two numbers your cuff shows you, and two your doctor actually calculates from them.

โš™๏ธ Your Reading
Nothing you enter here leaves your browser. All calculations run locally โ€” no health data is sent to any server.
How to get an accurate reading: sit quietly for 5 minutes first, feet flat on the floor, arm supported at heart level, no talking, and no caffeine or exercise in the 30 minutes prior. Take 2-3 readings a minute apart and use the average.

How to Use This Calculator

Enter your systolic (top) and diastolic (bottom) numbers exactly as they appear on your blood pressure cuff, and your Mean Arterial Pressure, Pulse Pressure, and AHA category update instantly. For the full explanation of what MAP and pulse pressure actually measure, why the AHA changed its categories, and a worked example for every calculation on this page, see the "How to Use the Blood Pressure Calculator" section of our complete guide.

Read the full guide first for the best context: what mean arterial pressure and pulse pressure actually mean clinically, how the AHA blood pressure categories work, what a high or low pulse pressure can indicate, and a detailed worked example for every calculation on this page are all covered in our Blood Pressure Calculator Guide 2026 โ†’

This calculator provides general estimates for informational and educational purposes only. It is not medical advice and does not diagnose hypertension or hypotension. A single reading, especially one taken at home or on this page, is not a substitute for clinical evaluation. If your reading is in the hypertensive crisis range, or you have symptoms such as chest pain, shortness of breath, or severe headache, seek emergency medical care immediately.