Blood pressure checker and log

Check a reading against three major guidelines, and keep a log that stays on your device.

Runs entirely in your browser. Nothing you type is sent anywhere.

mmHg
mmHg
bpm
years
American Heart Association
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ESC 2024 (Europe)
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ESH 2023 (Europe)
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One reading isn’t enough to judge your blood pressure. Guidelines are based on several readings taken on different days.

My log

Saved in this browser only. Nothing is uploaded. Clearing your browser data deletes it, so download a copy now and then.

DateReadingPulseAHAESC 2024

For general wellness only. These results are estimates from published formulas and guidelines, not a diagnosis or medical advice. They may not suit pregnancy, children, older adults, athletes or people with health conditions. Talk to a qualified health professional about your health. In an emergency, call your local emergency number.

How to use the blood pressure checker and log

American Heart Association: normal below 120 and below 80; elevated 120–129 and below 80; stage 1 hypertension 130–139 or 80–89; stage 2 hypertension 140 or higher, or 90 or higher. Readings above 180 and/or above 120 need prompt attention. ESC 2024: non-elevated below 120/70; elevated 120–139 systolic or 70–89 diastolic; hypertension 140/90 or higher. ESH 2023: optimal below 120/80; normal 120–129/80–84; high-normal 130–139/85–89; grade 1, 2 and 3 hypertension from 140/90, 160/100 and 180/110. When the two numbers fall in different categories, the higher category is used.

  1. Sit quietly for a few minutes, then take your reading as your monitor’s instructions describe.
  2. Enter the top (systolic) and bottom (diastolic) numbers.
  3. See the category under each guideline.
  4. Optionally add the reading to your log to see averages over time.

Understanding your result

Each guideline gives its own label for the same reading, so check the one your doctor uses. Guidelines judge blood pressure on several readings over different days, which is why the log shows averages. A very high reading triggers the American Heart Association’s advice on what to do next.

Sources

Sources checked on 9 October 2026. Formulas and thresholds are used as published; the wording on this page is our own.

Questions

Why do the guidelines give different labels?
US and European expert groups weigh the evidence differently, so the same reading can be “stage 1” in the US and “elevated” or “high-normal” in Europe. Your doctor will use the guideline followed where you live.
What should I do if my reading is very high?
The American Heart Association advises that if a reading is above 180 and/or above 120 and you have no symptoms, wait a minute and measure again, then contact your doctor if it is still that high. If you also have chest pain, shortness of breath, back pain, numbness, weakness, a change in vision or difficulty speaking, call your local emergency number.
Does this work for children or pregnancy?
No. Children’s blood pressure is judged against age, sex and height percentiles, and pregnancy has its own thresholds. Ask your doctor or midwife.
Where is my log stored?
Only in this browser on this device. We never see it. Download the CSV file to keep a copy or share it with your doctor.
Is this a diagnosis?
No. It compares your numbers with published ranges for general wellness. Only a qualified health professional can assess your health, taking your history and other tests into account.