Home measurement guide
How to take accurate blood pressure readings at home
A careful step-by-step guide to preparing, positioning your arm and cuff, taking repeat measurements, and avoiding common home blood pressure mistakes.
Accurate home readings depend on a validated upper-arm monitor, the correct cuff size, five quiet minutes of rest, supported posture, and consistent technique.
Prepare before you measure
- Use a validated automatic upper-arm monitor with the correct cuff size.
- Avoid smoking, caffeine, and exercise for 30 minutes before measuring.
- Empty your bladder and rest quietly for at least five minutes.
- Measure on bare skin rather than over clothing.
Use a supported position
- Sit with your back supported and both feet flat on the floor.
- Keep your legs uncrossed.
- Support your arm on a flat surface so the middle of the cuff is at heart level.
- Stay still and do not talk, text, or watch something stressful during the measurement.
Take and record the reading
Follow the monitor instructions and the schedule provided by your healthcare professional. The American Heart Association recommends taking two readings one minute apart and recording the results when monitoring at home.
- Use the same arm unless a healthcare professional tells you otherwise.
- Measure at approximately the same times on tracking days.
- Record both readings instead of selecting only the lower result.
- Add brief notes only when they provide useful context, such as missed medication or unusual stress.
Common causes of inconsistent readings
| Common issue | Better approach |
|---|---|
| Cuff over clothing | Place it on bare upper-arm skin |
| Unsupported arm | Rest the arm at heart level |
| Talking or moving | Stay quiet and still |
| Wrong cuff size | Use the size specified for your arm circumference |
| Measuring immediately | Rest quietly for five minutes first |
Primary sources
We link directly to the organizations responsible for the medical guidance used on this page.
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