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Samsung says to recalibrate the Galaxy Watch blood pressure feature every 28 days using a separate upper-arm blood pressure cuff. You can recalibrate sooner in Samsung Health Monitor; follow the calibration status and prompts shown in your app.
How often does Samsung require recalibration?
Recalibrate every 28 days. This is Samsung’s stated interval, not an approximate monthly schedule. Samsung Australia says the watch cannot take blood pressure measurements after 28 days have passed since its last calibration. Samsung Australia’s recalibration guidance
Your app may indicate when calibration is due. If its displayed status or current prompts differ from the instructions below, follow the prompts for your local app version.
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- A separate upper-arm cuff-based blood pressure monitor. Samsung’s US support instructions say the cuff is sold separately.
- Your Galaxy Watch and the phone paired with it, with Samsung Health Monitor installed and available in your region.
Samsung does not identify a preferred cuff model in the cited instructions. Choose an upper-arm monitor with a cuff that fits you; where applicable, consider whether the device has validation or certification recognized in your jurisdiction.
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How to calibrate or recalibrate the watch
- Open Samsung Health Monitor on your phone and select Blood pressure.
- Choose Calibrate the watch, then follow the on-screen instructions.
- Take a cuff reading while wearing the watch as directed, and enter the result in the app.
- Complete three cuff readings and enter them within 30 minutes, as specified in Samsung’s US instructions.
Samsung UK describes the route for early recalibration as Blood Pressure History > More > Recalibrate > Recalibrate the watch. Labels and menu locations can vary by region or app version, so use the option and wording currently shown in your app.
How to prepare for a reliable calibration
Samsung advises avoiding smoking, bathing, exercise, alcohol, and caffeine for at least 30 minutes before calibration. Before taking readings:
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- Measure indoors in a quiet place. Keep your arm and wrist dry and free of lotion or perspiration.
- Sit with your back supported, legs uncrossed and feet flat. Rest your forearms on a table and remain in that position for at least five minutes.
- Wear the watch snugly on the same wrist used for calibration.
- During each cuff reading, stay still, do not move your arm or talk, and breathe normally.
Can you recalibrate before 28 days?
Yes. Samsung’s US app information says you can use the recalibration option at any time; you do not have to wait until the 28-day interval ends. The UK support route is Blood Pressure History > More > Recalibrate, followed by Recalibrate the watch.
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Availability depends on your region and device software. Samsung’s US support page lists a Galaxy smartwatch running Wear OS 4.0 or later and a phone running Android 12 or later. Samsung’s US announcement identifies Galaxy Watch4 and later released models, excluding Galaxy Fit, subject to the stated software conditions. Samsung announced a phased US rollout beginning March 31, 2026, and says service may be restricted in unsupported regions. Samsung US support: checking blood pressure with a Galaxy smartwatch · Samsung Newsroom US announcement
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- NEW DESIGN. LIGHTWEIGHT FEEL: Maximize your days with a minimalist design. The sleek, thinner-than-ever silhouette makes Galaxy Watch8 look as good as it functions. With a snug fit and sporty style, it gives you readings without getting in your way.
- A PERSONAL ASSISTANT, RIGHT ON YOUR WRIST: Your Watch just became your personal assistant.⁴ Stay one step ahead of your day with a watch that helps you navigate your tasks and to-do lists.
Samsung states that the blood pressure function is not intended to diagnose disease or other conditions, or to cure, mitigate, treat, or prevent disease. Treat readings as wellness information, not as a replacement for a clinical blood pressure monitor or professional care. Contact a physician about medical concerns or treatment. Samsung Health Monitor
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