Blood pressure chart: What your reading means. By Mayo Clinic Staff. This blood pressure chart can help you figure out if your blood pressure is at a healthy level or if you’ll need to take some steps to improve your numbers. Your total blood pressure reading is determined by measuring your systolic and diastolic blood pressures.
What Systolic, Diastolic Blood Pressure Numbers Mean When you get your blood pressure numbers, there are two of them. The first, or “top” one, is your systolic blood pressure. The second, or “bottom,” one is diastolic blood pressure. Knowing both is important and could save your life.
Here’s how to understand your systolic blood pressure number: Normal: Below 120 Elevated: 120-129 Stage 1 high blood pressure(also called hypertension): 130-139 Stage 2 hypertension: 140 or more Hypertensive crisis: 180 or more. Call 911.