Blood Pressure Calculator
Check your blood pressure category from systolic and diastolic readings.
Systolic
120 mmHg
Diastolic
80 mmHg
BP Categories
| Normal | <120 / <80 mmHg |
| Elevated | 120-129 / <80 mmHg |
| Stage 1 | 130-139 / 80-89 mmHg |
| Stage 2 | 140+ / 90+ mmHg |
| Crisis | 180+ / 120+ mmHg |
Use the Blood Pressure Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
How It Works
Our Blood Pressure Calculator helps you quickly understand your blood pressure category based on your systolic and diastolic readings. Knowing your category is crucial for monitoring your cardiovascular health and taking proactive steps to manage it. According to the American Heart Association's 2026 guidelines, nearly half of all adults in the US are projected to have hypertension, making regular monitoring more important than ever.
This calculator utilizes the standard adult blood pressure classification criteria established by leading health organizations. You input your systolic pressure (the top number, reflecting pressure when your heart beats) and your diastolic pressure (the bottom number, reflecting pressure when your heart rests between beats). The calculator then compares these values against predefined ranges to determine your category: Normal, Elevated, Hypertension Stage 1, Hypertension Stage 2, or Hypertensive Crisis.
For accurate results, ensure you're taking your blood pressure correctly, ideally after resting for a few minutes and avoiding caffeine or exercise beforehand. Remember, this calculator provides a category based on a single reading; consistent high readings warrant a consultation with a healthcare professional. Avoid self-diagnosing or changing medication based solely on this tool.
Example: Understanding a Reading of 135/85 mmHg
- 1 Input your systolic pressure as 135 and your diastolic pressure as 85.
- 2 The calculator compares these values: 135 mmHg falls between 130-139 mmHg (Systolic Hypertension Stage 1) and 85 mmHg falls between 80-89 mmHg (Diastolic Hypertension Stage 1).
- 3 Based on these inputs, your blood pressure category is 'Hypertension Stage 1'.
- 4 This indicates that your blood pressure is consistently elevated and you should discuss these readings with your doctor to explore lifestyle modifications or potential treatment options to prevent further cardiovascular risks.
Source: CDC · Last updated: April 2026
Frequently Asked Questions
What is a normal blood pressure reading?
What does the top and bottom blood pressure number mean?
When should I be worried about high blood pressure?
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