Blood Pressure Calculator
Assess your blood pressure category using the American Heart Association (AHA) guidelines. Enter your systolic and diastolic readings to determine if your blood pressure is normal, elevated, or in one of the hypertension stages. Get instant, evidence-based feedback and recommendations for your cardiovascular health.
How to Use This Tool
1. Enter Systolic
Top number (mmHg)
2. Enter Diastolic
Bottom number (mmHg)
3. Calculate
View your BP category
4. Get Guidance
Health recommendations
Blood Pressure Categories
Always consult a healthcare professional for medical advice.
Quick Reference BP Table
| Category | Systolic (mmHg) | Diastolic (mmHg) | Action |
|---|---|---|---|
| Normal | < 120 | AND < 80 | Maintain healthy lifestyle |
| Elevated | 120–129 | AND < 80 | Lifestyle changes |
| Stage 1 | 130–139 | OR 80–89 | Consult doctor |
| Stage 2 | ≥ 140 | OR ≥ 90 | Seek medical attention |
| Crisis | > 180 | OR > 120 | Emergency care |
How We Calculated
- Input: We collected your systolic and diastolic blood pressure readings.
- Classification: Applied the AHA guidelines to determine your category.
- Assessment: Compared your readings against the thresholds for Normal, Elevated, Stage 1, Stage 2, and Crisis.
- Result: Displayed your category with explanation and recommendations.
Why Trust This Tool?
Based on official standards
No server storage
Use instantly
Works on all devices
Latest health guidelines
No hidden charges
Accuracy & Standards
This calculator uses the American Heart Association (AHA) blood pressure categories, which are the most widely recognized clinical guidelines for blood pressure classification. The tool is for educational purposes—not a substitute for professional medical advice.
Blood Pressure Ranges
<120/80
120-129/<80
130-139/80-89
≥140/≥90
>180/>120
Learn About Blood Pressure
What is Blood Pressure?
Blood pressure is the force of blood against your artery walls. It's measured in mmHg and recorded as two numbers: systolic (top) and diastolic (bottom).
Why It Matters
High blood pressure (hypertension) is a major risk factor for heart disease, stroke, kidney disease, and other serious health conditions. Regular monitoring is essential.
Managing BP
Lifestyle changes like reducing sodium, exercising regularly, maintaining a healthy weight, managing stress, and limiting alcohol can help manage blood pressure.
Real-World Examples
- Example 1: 118/76 → Normal
- Example 2: 125/78 → Elevated
- Example 3: 135/85 → Stage 1 Hypertension
- Example 4: 150/95 → Stage 2 Hypertension
Limitations of This Tool
- Does not replace professional medical diagnosis.
- Single reading may not reflect your average blood pressure.
- Does not account for white coat syndrome or other factors.
- Always consult a healthcare professional for medical advice.
Trust & Privacy
We take your privacy seriously. This tool:
- Does not store data on any server
- All calculations happen locally in your browser
- No cookies are used for this tool
References
- American Heart Association. Understanding Blood Pressure Readings. Heart.org.
- Centers for Disease Control and Prevention. High Blood Pressure Facts. CDC.gov.
- National Institutes of Health. Blood Pressure Guidelines. NIH.gov.
Editorial Process
The Healthtus editorial team reviews this tool regularly to ensure accuracy and alignment with the latest cardiovascular guidelines. We update the content and references as new research emerges.
Last reviewed: July 2026