Blood Pressure Calculator
Check your blood pressure category and health risk level
About Blood Pressure Calculator
Blood pressure is one of the most important vital signs for assessing cardiovascular health. This free blood pressure calculator helps you instantly classify your reading according to the American Heart Association's guidelines and understand your potential health risk level. Simply enter your systolic (top number) and diastolic (bottom number) values to receive a detailed assessment of your blood pressure category.
Understanding your blood pressure numbers is the first step toward heart health. A reading of 120/80 mmHg or below is considered normal, while higher values may indicate elevated blood pressure, Stage 1 hypertension, or Stage 2 hypertension. Consistently high blood pressure increases the risk of heart attack, stroke, kidney disease, and other serious conditions. Regular monitoring empowers you to take proactive steps and have informed conversations with your healthcare provider.
All calculations are performed entirely in your browser, ensuring complete privacy. No personal health data is collected, stored, or transmitted to any server. This tool is designed for educational purposes and should not replace professional medical advice, diagnosis, or treatment.
How to Use
- Enter your systolic blood pressure (top number) in mmHg
- Enter your diastolic blood pressure (bottom number) in mmHg
- Click the Calculate button to see your blood pressure category
- Review the classification and recommended actions for your range
Understanding Blood Pressure Categories
The American Heart Association defines five blood pressure categories. Normal blood pressure is a systolic reading below 120 and diastolic below 80. Elevated blood pressure features systolic readings between 120-129 with diastolic below 80. Stage 1 Hypertension is defined as systolic 130-139 or diastolic 80-89, and Stage 2 Hypertension is systolic 140 or higher or diastolic 90 or higher. Readings above 180/120 constitute a hypertensive crisis requiring immediate medical attention.
Why Use Blood Pressure Calculator?
- Instant classification based on AHA guidelines
- 100% free with no registration required
- All processing happens locally in your browser
- Mobile-friendly responsive design for on-the-go checks
- No personal health data collected or stored
- Educational resource for understanding cardiovascular health