Blood Pressure Calculator
Check your blood pressure category per AHA guidelines.
📐 Categories per American Heart Association guidelines. Not a diagnosis — consult a doctor for persistent high readings.
Blood pressure is the force of blood against artery walls, measured in millimetres of mercury (mmHg) as two numbers: systolic (pressure when heart beats) over diastolic (pressure between beats). High blood pressure — hypertension — is called the "silent killer" because it causes no symptoms while steadily damaging arteries, heart, kidneys, and brain. This calculator classifies your reading against ACC/AHA 2017 guidelines and explains what your numbers mean.
📋 How to Use This Calculator
Enter your systolic pressure (the higher number) and diastolic pressure (the lower number) from your blood pressure monitor reading. The calculator instantly classifies your reading as Normal, Elevated, Hypertension Stage 1, Hypertension Stage 2, or Hypertensive Crisis, and provides guidance on what to do next. For the most accurate result, take your blood pressure after sitting quietly for 5 minutes, do not smoke or consume caffeine for 30 minutes beforehand, and take two readings one minute apart and average them.
💡 Key Facts & Information
ACC/AHA 2017 blood pressure categories: Normal (<120/<80), Elevated (120–129/<80), Stage 1 Hypertension (130–139 or 80–89), Stage 2 Hypertension (≥140 or ≥90), Hypertensive Crisis (>180 and/or >120 — seek emergency care immediately). In India, hypertension affects approximately 30% of adults, with urban prevalence higher than rural. Common causes: high sodium diet (Indian diets average 10–12g salt/day vs the recommended 5g), physical inactivity, obesity, stress, family history, and excessive alcohol. A 10 mmHg reduction in systolic pressure reduces stroke risk by 35–40% and coronary artery disease risk by 20–25%.