Health tool
Home blood pressure log
Write down systolic, diastolic, and pulse after each measurement. The tool classifies each reading, averages the last 7 and 14 days, and can export a file for your doctor.
Add a reading
Recent readings
Two lines: systolic (top) and diastolic (bottom). Dashed guides mark 135/85, a common home-monitoring reference.
Recorded readings
How to measure at home
- Sit quietly for 5 minutes first; no caffeine, exercise, or smoking in the 30 minutes before.
- Back supported, feet flat on the floor, arm resting so the cuff is at heart level; do not talk during the reading.
- Take two readings one minute apart, morning and evening, and write both down.
Doctors usually care about the average over days, not one number — a consistent log is exactly what helps at your next visit.
Frequently asked questions
Where is my data stored?
Only in this device's browser storage — nothing is uploaded. Keep exported CSV or printouts safe yourself.
How do I measure accurately at home?
Sit quietly for 5 minutes, back supported, feet flat, cuff at heart level, and stay silent during the reading. Morning and evening readings over many days mean more than any single number.
What counts as high at home?
Under 120/80 is normal; 120–129 with diastolic under 80 is elevated; 130–139 or 80–89 is stage 1 territory; 140/90 or above is stage 2. A home average around 135/85 is a common threshold for talking to a doctor.
Does one high reading mean hypertension?
No. Readings swing with stress, exercise, caffeine, and posture. Doctors usually judge from averages across days, not a single number.
When should I seek urgent care?
A reading of 180/120 or higher, or any reading with chest pain, shortness of breath, severe headache, blurred vision, or one-sided weakness needs immediate care.