Blood pressure category

About this calculator

Enter a blood pressure reading to see which category of the 2025 American Heart Association and American College of Cardiology guideline it falls in.

What you need

• Your systolic (top) and diastolic (bottom) numbers, ideally the average of two or more readings

How it is calculated

Categories from the 2025 AHA/ACC guideline: normal, systolic under 120 and diastolic under 80; elevated, systolic 120 to 129 and diastolic under 80; stage 1, systolic 130 to 139 or diastolic 80 to 89; stage 2, systolic 140 or higher or diastolic 90 or higher. The higher category applies.

What the result can and cannot tell you

A single reading does not diagnose high blood pressure, and this tool gives no treatment advice. Readings higher than 180/120 mmHg are very high: measure again after five minutes and contact your health care professional right away if it is still that high, or call 911 if you also have symptoms such as chest pain, shortness of breath or a change in vision.

References

1. American Heart Association: Understanding blood pressure readings
2. MSD Manual: Classification of blood pressure in adults

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• Blood flow and glaucoma
• All eye calculators

For information only. These tools explain numbers and do not replace an eye examination or your eye doctor’s advice. Values you enter stay in your browser.