How to measure pressure with Xiaomi smart watches: a detailed guide with nuances

Xiaomi smartwatches have long ceased to be just an accessory for tracking steps — they have become full-fledged assistants in health monitoring. One of the most popular features of modern Mi Band and Xiaomi Watch is blood pressure measurement. But how to use this option to get reliable data? In this article, we will analyze all the subtleties from the preparation of the device to the interpretation of the results.

It's important to understand that smartwatches don't replace medical tonometers, but they can be a great tool for daily monitoring. We've analyzed official instructions, user feedback and research data to gather the most useful information, you'll learn which models support the function, how to adjust the measurement, and why readings can sometimes differ from hardware tonometers.

If you are just planning a purchase or have already encountered inaccurate data, here you will find the answers to all questions. Let’s figure out how to make the pressure measurement process on Xiaomi watches as efficient and safe as possible.

What Xiaomi models can measure pressure?

Not all smartwatches of the brand are equipped with sensors for monitoring blood pressure.

• 📱 Xiaomi Watch S1 Pro – flagship model with advanced medical capabilities
• 📱 Xiaomi Watch 2 Pro – improved version with certified sensors
• 📱 Xiaomi Mi Band 7 Pro – the first fitness bracelet with a function of measuring pressure
• 📱 Redmi Watch 3 Active – budget version with basic features
• 📱 Xiaomi Watch S3 — New 2026 model with improved accuracy

Note that older models (Mi Band 6 and earlier) don’t have this feature, and it’s also important to check the region of sale – in some countries, medical functions may be limited due to local regulations.

The latest firmware version is required to work accurately. Check for updates in Mi Fitness or Zepp Life (depending on the model) and without fresh software, the feature may not work properly or even be on the menu.

Preparation for measurement: 5 mandatory steps

To get the most accurate readings, you need to prepare properly, and disregarding these rules can lead to errors in the field of human behavior. 10-15 mmHg or more.

1. Calm. 5 minutes before the measurement, eliminate exercise, smoking and caffeine.
2. Right hand position. The hand with the clock should be at heart level. The optimal is to put your hand on the table with your palm up.
3. The belt should be fastened so that the sensor is firmly attached to the skin, but does not pass the hand.
4. Clean skin. Sweat, creams or dirt can distort the optical sensor readings.
5. Stable temperature. Measure the pressure in a room temperature room (20-25°C) Cold constricts the vessels.

Many users forget about the last point, and after all, the ambient temperature significantly affects the tone of blood vessels. 5-10 unit.

Step-by-step: how to measure the pressure on Xiaomi

The measurement process is slightly different from model to model, but the overall pattern is the same.

1. Activate the watch screen by pressing a button or bringing your hand to your face.
2. Find Health or Health Monitoring (names may vary).
3. Select the item Blood pressure or pressure measurement.
4. Follow the instructions on the screen. You usually have to hold your hand still. 30-60 seconds.
5. Wait for the result. The systolic and diastolic pressures will appear on the screen.
6. The data is automatically synchronized with the app on the phone.

On the Xiaomi Watch S1 Pro and Watch 2 Pro have the option to set up automatic measurements on a schedule. → Health monitoring → Measurement schedule.

The first measurement can take up to 2 minutes -- the clock takes time to calibrate the sensors. The subsequent measurements will be faster.

Measurement Accuracy: What to Expect from Smart Watches

Key fact: Xiaomi smart watches measure pressure indirectly (by pulse wave), not directly like medical blood pressure monitors. 5-10 mmHg is considered normal.

Studies show that accuracy depends on several factors:

To improve accuracy, the manufacturer recommends:

• 🔄 Conduct an initial calibration with a medical tonometer (there is a special mode in the application)
• 📊 Measure your pressure at the same time of day
• 🧘‍♂️ Conduct 2-3 interval 1 minute-over

⚠️ Note: If your readings consistently differ from the medical tonometer by more than 15 mm Hg, this may indicate a sensor malfunction or the need for recalibration.

Synchronization with the phone and data analysis

All measurements are automatically transmitted to the Mi Fitness or Zepp Life app (depending on the watch model).

• 📈 View the history of measurements in the form of graphs
• 🔍 Compare data with regulatory values for your age
• 📤 Exporting reports to PDF doctor
• 🔔 Set up notifications of critical values

To view detailed statistics:

1. Open the Mi Fitness app
2. Go to the Health section. → Heart
3. Select the Pressure tab
4. Click on the specific measurement for details

Newer versions of the app have added a trend analysis feature, which can warn of a steady increase in pressure over the past week, which can be an early sign of health problems.

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For more accurate analysis, sync your data with Google Fit or Apple Health to combine the clock readings with data from other devices and medical applications.

Common Mistakes and How to Avoid Them

Many users experience inaccurate readings due to errors, and here are the most common ones:

• ⏱️ Measurement too fast after loading, sensors need time to stabilize.
• 💍 There should be no gap between the sensor and the skin.
• 📱 Outdated firmware. Updates often include improvements to measurement algorithms.
• 🌡️ Measurement at extreme temperatures. Optimal range — 20-25°C.
• 🔋 Low battery power. At levels below 20%, accuracy may fall.

Especially often errors occur in users of Redmi Watch 3 Active - budget model is more sensitive to external factors. If you notice a systematic error, try to manually calibrate through the application.

⚠️ Warning: Some users try to trick the system by putting a watch on the other hand during the measurement, leading to critical errors in the data, as the algorithms are designed to target the sensors’ specific position relative to the heart.

Comparison with medical blood pressure monitors: should you trust?

The main question that users are concerned about is, can we rely on smartwatch readings instead of traditional tonometers?

The conclusion: Xiaomi smart watches are great for daily trend monitoring, but they do not replace the medical tonometer for diagnosis. If you are diagnosed with hypertension or hypotension, use the watch as an additional tool, not the main one.

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For maximum accuracy, combine measurements with a traditional watch. 1-2 This will help you calibrate your algorithms and identify the systematic error of your device.

FAQ: Answers to Frequent Questions