Body Composition Monitors Buyers Guide

Body composition monitors buyers guide gives insight into body composition monitors reviewed elsewhere on this site. Also, use body composition monitors buyers guide along with body composition monitors frequently asked questions to find the best one for your needs.

Body Composition Measures

First, Body Composition Monitors provide information about several aspects of your body. Now, the most familiar one is your weight. However, there are others like metabolic age of your body, Basal Metabolic Rate (BMR), Body Mass Index (BMI), bone mass, skeletal muscle mass, muscle mass, subcutaneous fat, body fat percentage, visceral fat percentage, proteins, fat free body weight, and water percentage.

So, one of the things to consider, is which of these measures are important to you. Some body composition monitors provide a few of the most important measures, while others provide the whole set and maybe others not listed above.

Metabolic age of your body

Your metabolic age is how your BMR compares to the average BMR for people of your chronological age in the general population. However, metabolic age tops out at 50. So, if your metabolic age is higher than your actual age, it’s an indication that you need to improve your metabolic rate. Meanwhile, increased exercise will build healthy muscle tissue, which in turn will improve your metabolic age.

Basal Metabolic Rate (BMR)

Basal Metabolic Rate (BMR) is the minimum daily calorie expenditure rate. This is the rate at which you must expend calories in order to stay alive. In fact, these are calories your body needs when resting (including sleeping) to function effectively. This measurement can be helpful to weight-loss programs in predicting weight-loss rates. For example, increasing muscle mass will speed up your BMR. Indeed, a person with a high BMR burns more calories at rest than a person with a low BMR.

Body Mass Index (BMI)

Now, the Body Mass Index has an accuracy of 0.1. A normal BMI ranges from 18.5 to 25.

Indeed, Body Mass Index or BMI is a calculation of a person’s weight-to-height ratio. BMI can be used to estimate weight-related health risk. 

Bone mass

Now, bone mass has an accuracy of 0.22 pounds.

In fact, bone mass is the weight of bones in the body. Also, this measure is used to represent the health of bones. Meanwhile, the amount of bone varies with age. By the way, increasing the amount of bone requires not only calcium, but also collagen.

Skeletal muscle mass

Skeletal muscle can range from 15 to 70% with an accuracy of 0.1%.

Lean body mass consists of your bones, ligaments, tendons, internal organs and muscles – the total body weight minus the fat weight.

Muscle mass

Muscle mass is the weight of muscles in your body. As your muscle mass increases, the rate at which you burn energy (calories) increases which accelerates your basal metabolic rate (BMR) and helps you reduce excess body fat levels and lose weight in a healthy way.

Subcutaneous fat

Subcutaneous fat is the deepest layer of fat. First, subcutaneous fat is one way that your body stores energy. Second, it functions as a padding to protect your muscles and bones from the impact of hits or falls. Third, it serves as a passageway for nerves and blood vessels between your skin and your muscles.

Body fat percentage

Body fat percentage of a human being is the total mass of fat divided by total body mass, multiplied by 100. Most of all, body fat includes essential body fat and storage body fat.

Visceral fat percentage

Research tells us that about 10 percent of all body fat is visceral fat. So, if you know your total body fat, 10 percent of it is an estimate of the amount of visceral fat.


The percentage of protein in total body weight is around 18% with an accuracy of 0.1%.

Proteins are the main building block of the body. They are an important component of all cells and tissues in the human body.  They are used to make muscles, tendons, organs, and skin. Furthermore, proteins account for about 18% of the total mass of the human body, and most importantly, it is essential for life.

Fat free body weight

Fat free body weight, also known as fat free mass or lean body mass, refers to all of your body components except fat. In fact, this weight includes your body's water, bone, organs, and muscle content.

Water percentage

Water or body water percentage can range from 45 to 60% for women, and 50 to 65% for men.

The number is the percentage of body water or fluids in total body weight and is usually around 60% to 70%. This number is strongly correlated with muscle mass. Because muscles contain a lot of water, this indicator can reflect the right way to lose weight. If the percentage of body water drops, not only does it harm your health, but it will also increase the body fat percentage.

Smart Phone Connectivity

For the most part, all of the body composition monitors or body fat monitors described here have Wi-Fi or Bluetooth connectivity to a smartphone. Moreover, smartphone apps like Samsung Health, Fitbit, Google Fit, Apple Health can use body composition measures supplied by the body composition monitors. Consequently, you have a way to keep track of progress with respect to these composition measures.

On the other hand, you may simply want to see the measures on the scale and let your brain keep track of your progress. For example, a standard weight scale shows your weight for you to monitor. In fact, one of the benefits of monitoring progress by this method is that your brain gets totally connected with the composition measures.


Finally, you want to have the confidence that the purchase you made is going to work for a long time. That's where the warranty comes in. In fact, the warranty is a type of insurance that you will get value from the purchase you made.