🩺Blood Pressure Checker
Enter a blood pressure reading you measured to see which standard AHA category it falls into — not a measurement tool, not a diagnosis.
Enter the numbers from your blood pressure monitor or cuff reading. This tool categorises the reading — it cannot measure your blood pressure.
Blood Pressure Categories (AHA 2025)
| Category | Systolic (mmHg) | Diastolic (mmHg) | |
|---|---|---|---|
Normal | Less than 120 | AND | Less than 80 |
Elevated | 120–129 | AND | Less than 80 |
Stage 1 Hypertension | 130–139 | OR | 80–89 |
Stage 2 Hypertension | 140 or higher | OR | 90 or higher |
Hypertensive Crisis | Higher than 180 | AND/OR | Higher than 120 |
Source: American Heart Association, 2025 — general reference only, not a diagnosis tool.
This tool categorises a blood pressure reading you measured with a separate device — it cannot measure your blood pressure. Categories are general reference based on American Heart Association 2025 guidelines and are not a diagnosis. Blood pressure varies with time of day, activity, stress, and other factors; a real diagnosis requires repeated measurements taken by a healthcare professional. For a hypertensive crisis reading (systolic above 180 and/or diastolic above 120), seek urgent professional advice; call emergency services immediately if you have symptoms such as chest pain, shortness of breath, vision changes, or weakness. Never start, stop, or change medication or treatment based on this tool — speak with a doctor.
Free Blood Pressure Checker
Took a blood pressure reading and not sure what it means? Our free Blood Pressure Checker helps you make sense of it. Enter the systolic and diastolic numbers you measured, and the tool shows which standard category they fall into—from normal and elevated through stage 1 and stage 2 high blood pressure—based on the American Heart Association's guidelines.
It's a reference, not a replacement for a real measurement or a doctor. This tool doesn't measure your blood pressure and doesn't diagnose anything; a single reading can vary with time of day, stress, and activity, and a real diagnosis needs repeated readings taken by a professional. If your numbers fall in a very high range, the tool clearly flags when to seek urgent care.
Simply enter your reading to see its category instantly. No sign-up, no downloads, no limits. For anything about your blood pressure or health, please speak with a doctor. Learn more in the FAQ or About pages.
About the Blood Pressure Checker
What it does not do
Does not measure blood pressure
A web page cannot measure blood pressure. You must take a reading with a separate device — a validated home cuff or a clinical measurement — and enter those numbers here.
Does not diagnose
A single reading is not a diagnosis. Blood pressure varies through the day; a real hypertension diagnosis requires repeated measurements over time by a healthcare professional.
Does not store or track readings
Nothing is saved, logged, or sent to a server. This tool does not keep a history, a trend, or any record of readings you enter.
Does not advise treatment
The tool shows a category, not advice. Never start, stop, or change medication or any treatment based on a category shown here — speak with a doctor.
The AHA 2025 blood pressure categories
Normal
Systolic below 120 mmHg AND diastolic below 80 mmHg. Both conditions must be met.
Elevated
Systolic 120–129 mmHg AND diastolic below 80 mmHg. Both conditions must be met; elevated applies to systolic only.
Stage 1 Hypertension
Systolic 130–139 mmHg OR diastolic 80–89 mmHg. Either condition qualifies; the higher category is used when they differ.
Stage 2 Hypertension
Systolic 140 mmHg or higher OR diastolic 90 mmHg or higher. Either condition qualifies.
Hypertensive Crisis
Systolic above 180 mmHg AND/OR diastolic above 120 mmHg. Takes precedence over all other categories. Requires urgent attention — see emergency guidance.
Higher-category rule
Standard clinical practice: when systolic and diastolic fall in different bands, the result shows the higher of the two categories.
Source: American Heart Association fact sheet (heart.org) and the 2025 AHA/ACC hypertension guideline.
Hypertensive crisis — emergency guidance
If a reading falls in the hypertensive crisis range (systolic above 180 and/or diastolic above 120), the tool shows a prominent emergency block above the category result. The block presents two messages:
- No symptoms: contact your healthcare professional now.
- Symptoms present (chest pain, shortness of breath, back pain, numbness, weakness, vision changes, or trouble speaking): call emergency services — 911 or your local equivalent — immediately.
This guidance is a general reference only. Always follow the advice of your healthcare provider.
Why a single reading isn't a diagnosis
Blood pressure naturally fluctuates throughout the day in response to activity, stress, caffeine, posture, the time of day, and many other factors. A reading taken after exercise or in a stressful moment will differ from one taken at rest. For this reason, a formal diagnosis of hypertension requires multiple readings taken under standardised conditions by a healthcare professional, not a single home measurement.
The category shown by this tool is a general reference — a way to understand where a single reading sits relative to the AHA scale. It is not a clinical finding.
Disclaimer
Frequently Asked Questions
Does this tool measure my blood pressure?
No. A web page cannot measure blood pressure. You enter a reading you already took with a blood pressure monitor or cuff, and the tool tells you which standard AHA category that reading falls into.
How does it categorise my reading?
It compares your systolic and diastolic numbers to the American Heart Association's 2025 blood pressure categories and shows the matching one. When the two numbers fall into different categories, it uses the higher category — which is standard practice.
Is this tool free?
Completely free, with no sign-up, no downloads, and no limits.
What are the blood pressure categories?
The AHA 2025 categories are:
- Normal — systolic below 120 AND diastolic below 80
- Elevated — systolic 120–129 AND diastolic below 80
- Stage 1 Hypertension — systolic 130–139 OR diastolic 80–89
- Stage 2 Hypertension — systolic 140 or higher OR diastolic 90 or higher
- Hypertensive Crisis — systolic above 180 AND/OR diastolic above 120
What if my reading is very high?
If your reading falls in the crisis range (systolic above 180 and/or diastolic above 120), the tool shows a prominent emergency block above the category result. If you have no symptoms, contact your healthcare professional now. If you have chest pain, shortness of breath, back pain, numbness, weakness, vision changes, or trouble speaking, call emergency services (911 or your local equivalent) immediately.
Is this a diagnosis?
No. A single reading is not a diagnosis. Blood pressure varies throughout the day, and a real diagnosis of hypertension or any condition requires repeated measurements taken by a healthcare professional over time.
Why does it use the higher of the two numbers?
This is standard practice. If your systolic and diastolic readings fall into different AHA categories, the higher category is used. For example, if your systolic falls in the Elevated range but your diastolic falls in the Stage 1 range, the tool correctly shows Stage 1 Hypertension.
Does it save my readings?
No. Nothing is stored, logged, or sent to a server. Your reading exists only in the page while you're using it and is never recorded anywhere.
Does it work on mobile?
Yes. The tool is fully responsive and works on any screen size — phones, tablets, and desktops — without any horizontal scrolling or overflow.
Should I change medication or treatment based on this?
No. This is a general reference tool, not medical advice. Never start, stop, or change any medication or treatment based on this tool or any single reading. Talk to your doctor for any decisions about your blood pressure or health.