Blood Pressure Category
Check your blood pressure category (normal, elevated, hypertension stage 1/2, crisis) from your systolic and diastolic readings, per AHA guidelines. Educational, private.
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Understand what a blood pressure reading means
A blood pressure reading is two numbers, and knowing which category they fall into, normal, elevated, or a stage of hypertension, is how you interpret them. This tool classifies a reading into its category from the systolic and diastolic values, so a pair of numbers becomes a meaningful indicator.
Why both numbers matter
The systolic (upper) number is the pressure when the heart beats; the diastolic (lower) is the pressure between beats. A reading is categorised by both, and the higher category of the two applies, so a normal diastolic does not reassure if the systolic is high. Understanding that the classification uses the worse of the two numbers prevents the mistake of reading only the one that looks better.
A single reading is not the whole story
Blood pressure varies through the day and with stress, activity and even the act of measuring, so one reading is a snapshot, not a diagnosis. Categories are guidance for when to pay attention, and a concerning reading warrants repeated measurement and professional advice rather than alarm. This is general information, not medical advice, and the calculation runs in your browser.
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Frequently Asked Questions
What do the two blood pressure numbers mean?
The systolic (upper) is the pressure when the heart beats; the diastolic (lower) is the pressure between beats. Both are used to classify a reading.
Which number decides the category?
The higher category of the two applies, so a high systolic places you in that category even if the diastolic is normal. The worse number governs.
Is one reading enough to diagnose hypertension?
No. Blood pressure varies through the day and with stress and activity, so a diagnosis needs repeated readings over time and professional assessment.
What should I do about a high reading?
Measure again calmly after a rest, and if it remains high, seek professional advice. Categories indicate when to pay attention, not a diagnosis.
Is this medical advice?
No. It is general information. Consult a professional about your blood pressure.
Privacy & Security
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How to Use
Enter your systolic and diastolic numbers to see your blood pressure category.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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