Smart gear to help you measure your belly and body fat

pinch an inch or more of belly fat

Knowing your body fat percentage is a critical tool in understanding your overall health understanding health risks. Reducing your body’s fat, particularly around your belly, makes you look and feel better and reduces your risk of developing diseases such as type 2 diabetes, hypertension, and cardiovascular disease (2). 

The good news is that even a small weight loss of between 5 and 10 percent of your current weight will help to lower your risk of developing these diseases (4).

And now, it’s easier than ever to track your body fat with digital tools like smart scales, smart scanners, tape measures, and apps for iPhones, Apple Watches, and Android devices.

This article discusses why knowing and reducing fat, particularly belly fat, is important and outlines a few products to help you know and manage your body fat percentage.

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Why is having fat around your belly bad?

There are three different types of fat in the body- Essential, Subcutaneous, and Visceral.

  1. Essential fat is necessary for good health and is located in your nerves, brain, bone marrow, and organ membranes. 
  2. Subcutaneous fat makes up most of our body fat (stored under the skin as an energy source.
  3. Visceral fat is found in the abdomen and around the major organs. 

A high body fat percentage, particularly a high amount of Visceral fat, can increase your risk for several diseases, such as type 2 diabetes, atherosclerosis, dyslipidemia (abnormal levels of cholesterol), hypertension, and coronary heart disease (1). 

If you have excess fat around your belly (subcutaneous fat), you will likely have excess fat around your organs (visceral fat).

Even if you have a low body mass index (BMI), a large waist circumference is associated with a higher risk of illness and death from Type 2 diabetes and cardiovascular disease (3).

A large waist circumference is also a common marker of poor fitness (2). 

How can you reduce body fat? working out on exercise bike

Improving your cardiovascular fitness can help you lose body and belly fat, lower your weight, reduce the risks of developing diseases such as type 2 diabetes, atherosclerosis, and dyslipidemia, and reduce the risk of death from cardiovascular disease (3). 

It has been found that men with high cardiovascular fitness have significantly less total abdominal fat, both subcutaneous and visceral fat when compared to men with low cardiovascular fitness (3).

What should my body fat percentage be?

The US Army uses body fat standards set between 20–26% for men and 30–36% for women, depending on age groups. 

The upper range of the percentages aligns with the maximum body fat values recommended in U.S. national health goals (2). 

Why is belly fat hard to lose?

Fat cells can be divided into two subtypes: Alpha and Beta. Different areas of the body have different amounts of each of these cells. Some have a higher amount of Alpha cells than Beta, and vice versa.

Beta cells do not respond as easily to the fat breakdown process (lipolysis) as Alpha cells. 

Some areas of your body will contain more Beta fat cells, so you will find it more difficult to get rid of excess fat in these areas.

When trying to lose fat, you may see changes in your legs, face, and arms first because these areas have more Alpha cells, whereas areas like the hips, thighs, and belly have more Beta cells, consequently making it harder to lose fat from these areas.

It can be more difficult to reduce the fat around your belly because it has more beta fat cells, which don’t respond as easily to the fat-breakdown process.

How is belly fat measured?

The gold standard to assess abdominal fat is magnetic resonance imaging (MRI), but MRI is expensive and must be performed in a clinic or hospital. 

Techniques such as computerized tomography (CT), dual X-ray absorptiometry (DXA), and Bioelectrical Impedance Analysis (BIA) are alternatives that provide similar accuracy of results as MRI [1]. 

So how can you measure your belly fat at home?

Instead of guessing, looking in the mirror, or using your clothes as a guide, several different types of smart devices with apps available for use at home can measure your body fat. 

There are many options available, depending on your preferences and needs.  

Home devices use many different types of technologies, such as bioelectrical impedance, infrared light, and breath analysis, and there are simpler options, such as digital tape measures with apps.

We broke down our recommendations into four different devices with apps that you can use at home to monitor your body fat and track your fat loss journey.

Here are our top belly and body fat measuring gear for those who want our recommendations without getting all the details.

  1. Bello Body Fat Scanner
  2. Renpho smart tape measure
  3. Ketoscan mini breath ketone meter
  4. Withings Body+ smart scale

Bello Belly Fat Scanner fat scanner device by Bello

This belly fat scanner uses Near-Infrared Light (NIR), a new method to analyze fat levels to a CT scan level accuracy.

This means the readings are not affected by water intake and will give you precise results. 

It works by focusing NIR on one area of the belly, and the reflected signals are analyzed. 

It is easy to use. Hold the scanner over the area you want to analyze, and the results can be viewed on the app on your mobile phone in just 3 seconds.

Plus, it syncs with Apple Health and Google Fit, allowing you to keep all your information in one place.

Features of Bello Belly Fat Scanner

  • Portable, pocket-sized, and lightweight.
  • Free App compatible with Apple Health and Google Fit.
  • Readings of your inner (visceral) and outer (subcutaneous) fat. 
  • Complete review and analysis of your daily progress.
  • Syncs via Bluetooth connection. 
  • LED display for device status.
  • Easy to use with one button  
  • Quick results seen in 3 seconds 
  • Lasts up to 4 months after a full charge. 
  • Sharable with up to 4 people. Each person needs their own account.
  • One-year warranty on the hardware.
Bello - Belly Fat Management Device with Smart App - Handheld Body Fat Scanner and Metabolism Tracker - Reliable Bluetooth Belly Fat Measurement Tool - Compatible with Apple Health and Google Fit
  • 【Why Measure Belly Fat?】 Excessive visceral belly fat is one of the leading causes of...
  • 【Accurate Measurement】 Holistic view of your inner (visceral) and outer (subcutaneous) fat....

Renpho Smart Tape Measure for Your Body

This product is a digital tape measure with a companion app. The app syncs with Apple Health, Google Fit, Samsung Health, and MyFitnessPal.

You use the tape measure to take measurements of different areas around the body as described in the Pie Fit app. Areas include the biceps, waist, hip, thigh, calf, and any area you want to measure.

The tape measure automatically syncs your measurements directly to the Renpho app. The app then calculates your body fat and stores your readings. All readings are stored in the app, and the device does not have any onboard memory to store data.

Fully charged, a single battery lasts for months with at least 10 measurement hours.

Features of Renpho Smart Tape Measure

  • Easy to track your progress with an app measurement chart and graphs.
  • The app tracks your waist-to-hip ratio to give you an assessment of your overall health.
  • Uses either metric or inches measurement system.
  • Seven different body parts can be measured with progress tracking. Keep track of changes in the biceps, calves, hips, thighs, waist, shoulders, and bust. 
  • The Renpho App can track unlimited users.
  • Ability to store different goals and track progress for each person. 
  • Integrates with Apple Health, Samsung Health, Google Fit, and MyFitnessPal.
RENPHO Smart Tape Measure, Body Measuring Tape for Weight Loss, Bluetooth Body Measurement Tape with App, Body Fat Measurement Device for Muscle Gain, Fitness Shape, Locking, Retractable, 60in /150cm
  • Smart Tape Measure. If you want your body measurements progress showing for graphing over time, this...
  • Easy to read measuring tape for body measurements. Reading the small numbers and lines on a...

V2 KETOSCAN Mini Breath Ketone Meter, Diet & Fitness Tracker KETOSCAN mini ketone breath meter

Ketoscan Mini is a portable breath acetone analyzer that measures the ketone level in your exhaled breath. Ketones naturally occur when your body burns fat, and as you burn more body fat, the ketones increase.

The device measures ketones in your breath, and its companion Ketoscan app then calculates your body’s fat-burning rate.

It is easy to use: turn it on, wait 30 seconds for the device to initialize, then blow into the device for 3 seconds to see your fat metabolism. 

The results can help you determine your body’s fat-burning rate and optimal ketosis state and can help you plan your nutrition and exercise regime.


  • Non-invasive, and no blood tests and finger pricks are required. Just use your breath to measure your level of ketosis.
  • Record and track your acetone levels. Warns you if you approach a dangerous level of ketosis.
  • Use the device with or without the Ketoscan app. You don’t need to connect it to your phone to use it!
  • Record and track your daily calories and add photos of the food you have eaten.
  • Device results show on both the device and in the app.
  • Must replace sensor after 300-320 uses. Sensor replacement service is available for about $30. After 300 tests, the app sends an alarm to replace the sensor to ensure the accuracy of readings.
V2 KETOSCAN Mini Breath Ketone Meter, Diet & Fitness Tracker | Monitor Your Fat Metabolism, Level of Ketosis on Low carb, Ketogenic or Any Nutrition & Fitness Program
  • [MADE IN KOREA] Ketoscan mini is a portable breath acetone analyzer that measures the ketone level...
  • ✔NON-INVASIVE: No need to prick your fingers. Just blow into the device for 3 seconds.

Withings Body+ Wi-Fi Body Composition Smart Scale Withings Body+ scale

If you want a scale to help measure your body fat, look for a scale that features a measurement of your full body composition via bioelectrical impedance analysis (BIA), like Withings Body+.

This device is a weighing scale that syncs automatically using Wi-Fi (or, if that’s not available, Bluetooth) with the Health Mate app. 

This smart scale uses bioelectrical impedance analysis (BIA) to give a full body composition reading.

This scale sends a tiny, harmless electrical current through your body to measure its total percentage of water with BIA technology. Using that information, the scale can calculate your body fat percentage (fat mass) and your body mass index or BMI using its set of unique algorithms. body composition on Withings health mate app

In addition to body fat mass, this smart scale also gives you a full-body composition analysis, including details on your muscle mass, bone mass, and water mass. 

Because the scale uses Wi-Fi instead of Bluetooth, you do not need to have your phone with you when you or other family members use the scale. It recognizes you automatically and sends the data only to your device.


  • Gives a full body composition reading, including body fat and water percentage and muscle and bone mass.
  • Battery lasts up to 18 months with regular use.
  • The Health Mate app records and tracks the data of up to 8 people.
  • Pregnancy mode (healthy weight gain range and obstetrician-reviewed advice) and Baby Mode to track the weight of your body (when you step on the scale holding your baby.)
  • Precise readings using Position Control Technology guide you to the correct place to stand on the scale.
  • Scale and the Health Mate app are compatible with Apple Health, Fitbit, Google Fit, and Apple Watch and over 100 third-party partner health and fitness apps like Strava, MyFitnessPal, Weight Watchers WW, Lose It, and other popular apps.
  • Offers a 1-year warranty.
Withings Body+ Wi-Fi bathroom scale for Body Weight - Digital Scale and Smart Monitor Incl. Body Composition Scales with Body Fat and Weight loss management
  • FSA & HSA Eligible.Compatible Devices : iPhone 4s (or higher), iPod Touch 4th Gen (or higher), iPad...
  • #1 BEST-SELLING SMART SCALE In the US. One of the smartest digital scales for body weight, making it...


I hope that this article helped you understand the importance of reducing your belly fat and informed you about some of the different ways you can measure and track your fat loss with smart devices at home. 

Good luck on your fat loss journey and your path to better health.

If you have any more questions or anything to add, please let us and everyone else know about it in the comments section down below!

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(1) Bello-Chavolla et al. (2020) Metabolic Score for Visceral Fat (METS-VF), a novel estimator of intra-abdominal fat content and cardio-metabolic health Clinical Nutrition Volume 39, Issue 5, May 2020, Pages 1613-1621.

(2)  Karl E. Fried l (2004) Diabetes Technology & Therapeutics. (Oct )732-749.

(3) WONG, S, L. et al. (2004) Cardiorespiratory Fitness is Associated with Lower Abdominal Fat Independent of Body Mass Index, Medicine & Science in Sports & Exercise: February Volume 36 Issue 2 – p 286-291 DOI: 10.1249/01.MSS.0000113665.40775.35

(4) U.S. Department of Health & Human Services

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Zena Clark (HSPC, CSP registered Physiotherapist)
I have a first-class honors Physiotherapy degree and a second class honors Sports Science degree. I am also a certified Yoga teacher and Yoga therapist. Before completing my University education in the United Kingdom, I worked as a fitness instructor and athletics coach for many years. Since 2008 I have been practicing in the UK as a Chartered Physiotherapist, and traveling to European and World Cup tournaments with the Wales Masters field hockey team as their physiotherapist. I am passionate and actively involved in health and fitness and in the process of research and writing. I believe everyone should have access to the latest health and wellness research in simple, easy to understand language. In 2009 I published a research article ‘Is Yoga An Effective Treatment for Low Back Pain’ in the International Journal of Yoga Therapy. Currently, I am a freelance writer producing content relating to physiotherapy and health and wellness. I love anything animal! I have three rescued dogs and two parrots. I placed third lady in my city’s annual marathon (dressed as a bunny!) to raise funds for an animal welfare charity.


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