Blood pressure categories
Classify a blood pressure reading (systolic/diastolic) using the AHA categories.
- Instant
- Free
- Private (processed locally)
- No sign-up
Place your blood pressure
Enter the two numbers of your reading: the tool shows the matching category and highlights it in the American Heart Association chart.
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Enter systolic
The top number.
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Enter diastolic
The bottom number.
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Read the category
And the reference chart.
Measurement tips
- Rested for 5 minutes, seated
- Arm supported at heart level
- Avoid coffee/smoking 30 min before
- Several readings over several days
Categories (AHA)
| Category | Systolic | Diastolic |
|---|---|---|
| Normal | < 120 | and < 80 |
| Elevated | 120–129 | and < 80 |
| Hypertension stage 1 | 130–139 | or 80–89 |
| Hypertension stage 2 | ≥ 140 | or ≥ 90 |
| Hypertensive crisis | > 180 | or > 120 |
Educational information per the American Heart Association. Not a substitute for medical advice; consult a health professional.
Frequently asked questions
What do systolic and diastolic mean?
Systolic (the top number) is the pressure when the heart contracts; diastolic (the bottom number), when it relaxes. Both are measured in mmHg.
What are the AHA categories?
Normal (<120 and <80), elevated (120-129 and <80), hypertension stage 1 (130-139 or 80-89), stage 2 (≥140 or ≥90), hypertensive crisis (>180 or >120).
When should I seek urgent care?
A reading above 180/120 mmHg, especially with symptoms, is a medical emergency: contact a doctor promptly.
Is this a diagnosis?
No. It is an educational reference. A single reading is not enough; only a health professional can diagnose hypertension.