Blood Pressure Checker
Check what your blood pressure reading means — enter systolic and diastolic values to see your category under standard guidelines — free online. — free, fast and private.
How to use Blood Pressure Checker
- Enter your systolic (top) number and diastolic (bottom) number in mmHg.
- Click Check My Reading to see your blood pressure category.
- Repeat the check on different days — a single reading is not a diagnosis.
Note: this tool runs in your browser. Nothing is uploaded.
Disclaimer: this is an estimator only — please see a qualified professional for advice about your specific situation. This checker is for information only and is not a diagnosis. Blood pressure should be measured properly and interpreted by a doctor, especially if readings are high. Seek urgent care if your reading is very high (above 180/120) or you have symptoms such as chest pain or breathlessness.
Frequently Asked Questions
What is a normal blood pressure reading?
A normal reading is usually below 120/80 mmHg. 120–129 with a diastolic below 80 is classed as elevated, 130–139 or 80–89 as Stage 1 high blood pressure, and 140/90 or higher as Stage 2. Always confirm with a doctor.
Is this tool free to use?
Yes, it is 100% free with no sign-up. Your data stays in your browser.
Is my data uploaded or stored?
No. This tool runs entirely in your browser — nothing you enter is uploaded to a server.
Can I use it on my phone?
Yes, it is fully mobile-friendly and works in any modern browser on phone, tablet or computer.