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How Do Smart Scales Work

How Do Smart Scales Work

What about having a smart weight-measuring device at home that is not only confined to weight measurement but also gives you details on bone mass, body fats, muscle mass, etc.? Smart Scale is a smart device that you keep in your bathroom and use to measure every once regularly. If you’re thinking about how smart scales work.

Then hang on because here we’ll discuss the smart scale and how it works to track your whole body weight and can connect to your smartphone.

What is Smart Scale

Smart Scale is an electrical weight-measuring device that measures weight like other traditional weight-measuring devices. But the best thing about the scale is its smart features to transfer personal details to smartphones. Another amazing feature comes with the advancement of technology which enables it to measure extra body information such as;

  • Body fats,
  • Muscle mass
  • Bone density
  • Body water percentage
  • Body mass index (BMI)
  • Basal metabolic rate

However, the functionality differs from one scale to another. Some most advanced scales allow personalization with different modes, such as giving track of weight if you are pregnant or the baby’s weight.

You can track and store all the information on the scale’s developed app. Using data, you can set your fitness goals, look at weight loss progress, and share these stats.

Working of Smart Scale

We will divide the overall working of Smart Scale into two sections. The first one will describe the technology used for measuring the weight and percentage of body composition, and the other one will explain how it connects with other apps for syncing data.

Weight and Body Compositions Measurement

Generally, the smart scale works the same as the traditional weight measurement scale. Simply you need to step on the scale and wait for a few seconds. However, It can also do BMI calculation if you provide your height. The main technology used in scale is BIA.

Bioelectrical Impedance Analysis (BIA): Smart Scale uses bioelectrical impedance analysis techniques for measuring body composition percentage. These techniques use small painless electric current which passes to the body. Different body tissues conduct electric impulses at different rates and cause flow resistance or impedance.

On returning the electric pulse, the sensor detects it, uses mathematical formulas, and incorporates it with a person’s height, weight, and age. Finally, give the percentage of body compositions.

Precautions: It is worth mentioning here that people should turn off electric pulse features if they are medical devices implanted, such as pacemakers.


Smart Scales send all the information to the smartphone or fitness tracker, where you can analyze the data and store it for future comparison—wifi is used for building a connection between smartphones and the scale. However, Bluetooth can be a source of connectivity in several devices.

Importance of Internet Connectivity for Tracking Progress and Storing Data

Syncing the progress and storing it in your smartphone or fitness tracker is also important and beneficial. Smartphones can display multiple body metrics such as weight, fat percentage, muscle mass, etc. It allows you to chart progress and set goals according to the stats. Using a smart device, you can also give your personal information, such as height and age.

How to Do Accurate Measurements

A few factors can result in inaccurate measurements of final results, which you should consider if you want accurate measurements. Follow the below tips;

  • Place the scale on an even surface.
  • Take off socks or shoes for body compositions measurement
  • Wear little clothes or be consistent with the number of clothes while using the scale
  • Use the scale early in the morning before eating or drinking
  • Follow the time routine instead of measurements randomly

So, these are a few variables that you can follow to get accurate measurements.


Smart Scales works simply as traditional scale work but also uses bioelectric impedance analysis to determine body compositions. However, they are helpful because they communicate your body stats with your smartphones, where you can track progress and set future goals.