Blood Pressure Calculator

Enter your systolic and diastolic blood pressure readings to instantly see your BP category (Normal, Elevated, Hypertension Stage 1/2, or Crisis) and get actionable health advice. 100% client-side.

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Quick Examples

About Blood Pressure Calculator

This calculator uses the blood pressure classification guidelines from the American Heart Association (AHA). Blood pressure is measured in millimeters of mercury (mmHg) and recorded as two numbers: systolic pressure (when the heart beats) over diastolic pressure (when the heart rests between beats). Regular monitoring helps detect hypertension early and manage cardiovascular health.

Features

Frequently Asked Questions

What is normal blood pressure?

Normal blood pressure is below 120/80 mmHg. The first number (systolic) represents pressure when your heart beats, and the second (diastolic) represents pressure when your heart rests.

How often should I check my blood pressure?

If you have normal blood pressure, check it at least once every 2 years. If you have elevated BP or hypertension, your doctor may recommend daily or weekly monitoring at home.

Can one high reading mean I have hypertension?

No. Blood pressure fluctuates throughout the day. Hypertension is typically diagnosed after consistently high readings over multiple visits or home monitoring sessions.

What lifestyle changes can lower blood pressure?

Key changes include: reducing sodium intake, exercising regularly (at least 150 minutes/week), maintaining a healthy weight, limiting alcohol, quitting smoking, managing stress, and eating a diet rich in fruits, vegetables, and whole grains (DASH diet).