How Does a Scale Measure Body Fat?

How Does a Scale Measure Body Fat 1

How Does a Scale Measure Body Fat?

Body fat

Food consumed by humans is fuel for the body. After, the food is digested the fuel is released into the bloodstream where it is used up to perform bodily processes. When we consume more calories required by our body, these extra calories are stored as fat. The body can not burn all these calories and a high level of glucose in the blood forces the body to store the extra fuel as fat.

How a body fat scale works

Body fat is the weight of fat alone. Bioelectrical impedance analysis or BIA I a technology used at home to estimate the body fat. BIA sends a painless electrical signal throughout your body. The cycle starts with one leg and ends at the other. The longer the time it takes the more percentage of body fat. As muscles contain more water as compared to fats, BIA signal travels faster in water.

Keep an eye on these

There are a few factors which must be kept in mind for better results. Make sure you are hydrated. If there will be less water in your body due to sweating after a workout or you haven’t consumed enough water, then electric current would not be able to flow through. Another thing to keep in mind is to stand still. The scale has sensitive electric sensors and as a result, the BIA will give inaccurate results. If you are body building, the heavy weight training causes the muscle to be heavier than fat. These scales are not recommended for children, old people, pregnant or ill people.

How accurate are these scales

Scales are accurate in measuring body weight but when it comes to measuring body fat, scales are not that accurate. Basically, these body fat scales measure the body density. Age, gender, body size, the level of fitness, and ethnicity are the different factors which completely vary from person to person so only one formula cannot be used to measure the body fat for everyone. Hence, we get inaccurate results.

Better options

Visiting a professional will give you better results as these scales give a week to week change in fat levels. Full body scans, for example, CT scans, MRI scans and other techniques like underwater weighing are better options as these are more accurate.


This is how body fat is measured but if you are ready to spend extra money then you can go to a professional to get accurate results.


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