Blood Pressure Tracker & Trend Chart
Log systolic and diastolic blood pressure with date, optional heart rate and note; the record is classified against the reference ranges (<120/80 normal, 120-139/80-89 normal high, 140-159/90-99 grade 1, ≥160/100 grade 2) and plotted on a trend chart. History stays in your browser only.
Your latest blood pressure result will appear here.
Blood pressure reference ranges
| Level | Systolic | Diastolic |
|---|---|---|
| Normal | < 120 | < 80 |
| Normal high | 120–139 | 80–89 |
| Grade 1 | 140–159 | 90–99 |
| Grade 2 | ≥ 160 | ≥ 100 |
For self-reference only — reference ranges are informational and not a medical diagnosis. If readings stay high, see a doctor.
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What is it
Keeping a home blood pressure log with the same cuff and posture each time gives a far more stable picture than single readings at the clinic. This tracker records each measurement, classifies it against reference ranges and draws a trend chart.
Notes & fun facts
For anyone monitoring blood pressure at home, a dated record of the past weeks is what makes the trend visible — and that is exactly the information a doctor wants to see at your next visit.
Origin & history
Modern blood-pressure measurement dates to the late 19th century: in 1896 the Italian physician Scipione Riva-Rocci introduced the cuff sphygmomanometer, making indirect arm-cuff measurement practical, and in 1905 the Russian military surgeon Nikolai Korotkoff discovered that listening for arterial sounds while deflating the cuff reveals systolic and diastolic pressure. Blood-pressure classification schemes were then gradually established, paving the way for home monitoring.
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