Xiaomi Mi smart scales have long since ceased to be just a weight measurement device, they have become a full-fledged assistant for health control. One of the key indicators that owners of such gadgets analyze is the percentage of body fat. This metric helps to assess fitness, the effectiveness of training and even the risks of certain diseases. However, not all users know how to correctly interpret the data from the Mi Body Composition Scale scale or where to look for information about body fat.
In this article, we'll look at how to find and read Xiaomi's fat score, which models support this feature, and why the numbers on the screen may differ from the real values. You'll also learn how to sync data with the Mi Fit app (or Zepp Life), what fat norms are considered healthy, and how to improve measurement accuracy, if you've only bought a scale or used it for a long time, but never paid attention to advanced analytics, this guide is for you.
What Xiaomi Mi weight models show fat percentage?
Not all Xiaomi smart scales are able to analyze body composition, and the function of measuring fat, muscle, water and bone mass is only available in models with bioimpedance analysis (BIA). Here are the main devices that support this functionality:
- 🔹 Xiaomi Mi Body Composition Scale 2 is the most popular model with support for 13 metrics, including fat and muscle mass.
- 🔹 Xiaomi Mi Smart Scale 2 - budget version with a basic set of indicators (fat, water, muscles).
- 🔹 Xiaomi Mi Scale 3 – Updated version with improved accuracy and support for Bluetooth 5.0.
- 🔹 Xiaomi Smart Scale 2 Lite – a simplified model without a screen (data only in the application).
If you have a Xiaomi Mi Scale 1 or some other early version without bioimpedance, you won't see the percentage of fat -- these scales only measure weight. To get an exact model, look at the box or at Settings. → About the weights in the Mi Fit app.
⚠️ Warning: Bioimpedance analysis works only with bare feet on metal electrodes, socks, tights or wet skin will distort the results.
Also, the accuracy of fat measurements depends on the calibration of the scales and your personal data (age, height, gender), and if you do not specify them in the application, the figures may be overestimated or underestimated by 3-5%.
Where to watch the percentage of fat: on the scale screen or in the application?
The way the data is displayed depends on the model of your weights:
- On the scale screen: The models with the display (Mi Body Composition Scale 2, Mi Scale 3) show the percentage of fat immediately after weighing. FAT: XX% or icon 🍳.
- In App Only: The Smart Scale 2 Lite transmits all data exclusively to Mi Fit or Zepp Life. On the scales themselves, you will only see the weight numbers.
Even if your model shows fat on the display, the app will show more detail, for example, you can see:
- 📊 Fat Changes in Week/Month.
- 🧠 Visceral fat (environmental organs).
- 💪 Fat and muscle ratio in graphs.
If you don’t see fat percentage on the scales or in the app, check:
Update the firmware of the scales through the app
Make sure your profile shows the correct age and height
Check that the scales are connected to the account Mi/Xiaomi
Reset the scales to factory settings (hold the power button for 10 seconds)-->
Step-by-step: how to measure fat on the scales Xiaomi Mi
To get accurate data, follow this algorithm:
- Preparation: 🕒 Weigh yourself in the morning on an empty stomach (after the toilet, before breakfast). 🚿 Your feet should be clean and dry (without cream!). 🧘 Stand on the scales still, do not talk.
Measurement process:
- Turn on the scales (click on them or touch the sensor).
- Stand evenly, spreading the weight on both legs.
- Wait for the signal (vibration or sound) – this means that the analysis is completed.
- View results: On scales with a screen: wait for the inscription to appear FAT Or fat icons. In the app, open the Data tab. → Body composition.
If the scales show a Lo error or ---, It means that the bioimpedance signal has failed:
- 🔌 Reset the scales (remove the batteries for 30 seconds).
- 🧴 Remove cream or sweat from your feet.
- 👟 Take off your socks and stand up bare feet.
Why does the scale show a "Lo" error?
How to read fat indicators: norms for men and women
The percentage of body fat is not just a number, it's an indicator of health, and the rates vary depending on sex, age and activity level.
| Category | Women (%) | Men (%) | Description |
|---|---|---|---|
| Dangerously low. | < 13% | < 5% | Risk of hormonal disorders, exhaustion |
| Athletes | 14–20% | 6–13% | Optimal for professional athletes |
| Fitness level | 21–24% | 14–17% | Perfect for sports fans |
| Medium level | 25–31% | 18–24% | Normal for most people |
| Elevated | > 32% | > 25% | Risk of cardiovascular disease |
It's important to understand that Xiaomi scales can overstate the percentage of fat by 2-4 percent compared to medical analyzers, and this is due to a bioimpedance technique that is sensitive to hydration, for example, if you drank a lot of water before weighing, your fat score may be understated.
For a more accurate assessment:
- 📅 Measure yourself at the same time (e.g. every morning).
- 📉 Compare the dynamics, not the absolute numbers.
- 🏥 For medical diagnosis, use a caliper or DEHA scan.
💡
If your fat percentage is above normal but you are lean, it is likely visceral fat (internal) that is a problem, and you can see the level in the Mi Fit app under the "body composition" tab.
Frequent mistakes in measuring fat on Xiaomi scales
Many users get inaccurate data because of simple errors, and here are the most common ones:
- Wrong position on the scales: 🚫 You can not lean on one leg or touch the wall. 👟 The feet should cover the electrodes completely (not at the edge!).
- Factors not accounted for: 💦 After a workout or bath, fat will be understated due to water loss. 🍷 Alcohol on the eve distorts results by 1-2%.
Technical problems:
- 🔋 Discharged batteries (AAA) cause disruption.
- 📱 No sync with the application (check Bluetooth!).
⚠️ Note: If you have recently lost 5+ If you lose weight quickly, you lose water and muscle, and the fat goes away later, wait for the weight to stabilize and measure it in 2-3 weeks.
Another common problem is the difference between Xiaomi’s weights and other devices (like Withings or Garmin), which is due to different calculation algorithms. Use the same scales for long periods of time for objectivity.
How to improve measurement accuracy: tips from experts
To make the Xiaomi Mi scale data as close to reality as possible, follow these guidelines:
- 🕘 Time of day: Optimal - 20-30 minutes after waking up, before breakfast and water.
- 🚰 Hydration: Do not drink too much fluid 1-2 hours before weighing (but do not let yourself become dehydrated either!).
- 🏋️ Physical activity: After exercise, wait 4-6 hours – muscles accumulate water, which distorts the results.
- 📱 Software Updates: Regularly update the firmware of scales and the Mi app Fit/Zepp Life.
If you're serious about exercising or being healthy, keep a measurement diary.
| Date. | Weight (kg) | Fat (%) | Muscles (%) | Notes |
|---|---|---|---|---|
| 01.06 | 72.5 | 22% | 40% | Morning, after sleep. |
| 08.06 | 71.8 | 21% | 41% | After a week's diet |
So you can track trends, not focus on one-off fluctuations. Remember, even professional scales have a margin of error. ±3-5 percent. Dynamics, not absolute numbers, are the key.
💡
If you want to calibrate the scales to your own, take 5-7 measurements in a row at 1 minute intervals, and then average the result, which will help you understand the "baseline" level of error of your device.
Alternative ways to measure fat: what is more accurate than Xiaomi’s weights?
While smart scales are convenient, their accuracy leaves much to be desired. If you want more reliable data, consider these methods:
- 📏 Caliper (fold meter): Accuracy: ±3-4% How it works: Measuring the thickness of the skin fold at 3-7 points on the body. Cons: Requires skill or help from a second person.
- 🏥 DEHA scanning (DXA): The margin of error: ±1-2% How it works: X-ray scans of bones, fat and muscles Cons: Expensive (3-5 thousand rubles per procedure), infrequently available.
- 💡 3D-Scanners (e.g. Naked Labs): Error: ±2-3%. How it works: The scanner creates 3D-body model and calculates the volume of fat. Cons: Very expensive (from 50 thousand rubles.).
For most Xiaomi users, it is enough to monitor the dynamics in the application. If you need accurate data (for example, to prepare for competitions), combine bioimpedance with a caliper or contact a medical center.
Fun fact: Some Xiaomi fitness trackers (such as the Mi Band 7) also know how to estimate fat mass, but their accuracy is even lower than that of weights, and they use pulse and activity data for a rough estimate.