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Smart scales are electronic devices that can measure more than just weight. They can also track additional information about body composition, such as body fat percentage, muscle mass, and bone mass, to help provide more details about a person’s health.

This article will discuss what smart scales are, their benefits, how to choose one, some scales available to buy, and alternative options.

Smart scales are electronic scales that offer a variety of extra functions. These features may help people achieve their fitness and wellness goals more easily than using traditional bathroom scales.

Smart scales are capable of tracking and storing data and communicating with other smart devices, such as fitness trackers or smartphones. This also allows users to set goals, chart progress, and share statistics.

These devices can also record biometric information, including body fat, bone density, resting heart rate, and water percentage, through bioelectrical impedance analysis (BIA).

BIA involves a small electrical current that the scales pass through the body. As different bodily tissues — such as muscle, fat, and bone — have varying levels of water content, they also differ in electrical conductivity. The BIA uses this information to calculate a person’s body composition.

People can turn off the electrical impulse feature on most smart scales. Pregnant individuals and anyone with a medical device implant, such as a pacemaker, should turn this feature off before using these machines.

  • $ = under $40
  • $$ = $40-$60
  • $$$ = over $60

Many smart scales are available to buy online. Below are five products that people may wish to try.

Please note that the writer of this article has not tried any of these products. All information presented here is purely research-based.

The following smart scale tracks different body composition metrics, is compatible with fitness apps, and can hold up to eight user profiles.

Wyze Scale

Price: $

The Wyze Scale tracks 12 body composition metrics:

  • weight
  • lean body mass
  • metabolic age
  • body fat percentage
  • muscle mass
  • bone mass
  • body water percentage
  • protein level
  • basal metabolic rate (BMR)
  • body mass index (BMI)
  • visceral fat
  • heart rate

This scale also syncs data with other fitness apps, such as Apple Health and Google Fit. This allows people to view their progress at any time via Bluetooth connectivity. The scale turns on when a person stands on it, and it can measure biometrics when they stand on the glass surface.

The manufacturer states that the scale automatically recognizes up to eight users and accommodates unlimited guest modes.

People considering purchasing a smart scale for family use may wish to consider scales that can track separate profiles.

Withings Body+ Scale

Price: $$$

The Withings Body+ Scale measures weight, body fat, water percentage, and muscle and bone mass. Its maker states that measurements are accurate to 100 grams. The scale also syncs with more than 100 fitness apps, such as Apple Health, Fitbit, and Google Fit.

This smart scale automatically syncs information via Wi-Fi with Health Mate, a free health app. The scale also features position control technology, giving people suggestions on how to stand for more reliable results.

Withings states that up to eight users can weigh themselves and track their personal histories, with the scale automatically recognizing which user is standing on the device.

This smart scale also features a pregnancy tracker, allowing those who are pregnant to see their healthy weight gain range and receive obstetrician-reviewed advice. The device also includes a baby mode to help track infant health.

As well as these features, the Withings Body+ Scale allows individuals to set their weight goals and track the number of calories they consume every day.

RolliBot Rolli-Fit Scale

Price: $

The RolliBot Rolli-Fit Scale takes eight biometric measures, including weight, BMI, fat and water percentage, bone and muscle mass, BMR, and visceral fat. It accurately weighs people who weigh up to 400 lb. It comes with three AAA batteries and features automatic switch-off technology to conserve battery life.

Rollibot recommends that people use the scale with bare feet to allow the device to measure correctly. The free companion app syncs data with Apple Health, Google Fit, and Fitbit.

This scale also allows a person to create unlimited member profiles, enabling the whole family or household to track their fitness and wellness goals.

Smart scales that measure body metrics may help people reach their fitness and health goals.

Runcobo Digital Scale

Price: $$

The Runcobo Digital Scale takes 14 body composition measurements, including weight, body fat and water percentage, muscle and bone mass, BMI, BMR, and protein levels.

The scale automatically switches between Wi-Fi and Bluetooth connectivity to ensure people can check their fitness and wellness goals wherever they are.

Although Runcobo offers a companion health app, the smart scale is also compatible with most smartphone fitness apps and fitness trackers, such as Fitbit.

Additionally, this smart scale can identify up to eight users, automatically sending the user’s measurements to their corresponding profile.

Chargeable smart scales remove the need for batteries and can save money in the longer term.

QardioBase 2 Scale

Price: $$$

This smart scale measures weights of up to 396 lb and reads BMI and changes in body composition. It features Bluetooth and Wi-Fi connectivity, while people can easily set up the device through the free Qardio companion app. The manufacturer claims that the scale accurately measures weight on any surface, including carpet.

This scale syncs with most apps, including Apple Health, Samsung Health, MyFitnessPal, Google Fit, and Cronometer, allowing people to keep all their fitness and wellness information in one place.

The QardioBase 2 also does not require any batteries. Instead, a person first charges the scale with the supplied USB cable, which provides enough power for up to 12 months of use. Individuals can subsequently recharge the device at any point using the cable.

Qardio states that this smart scale can automatically recognize up to eight unique users and comes with a guest mode. The scale also includes a pregnancy mode that lets a person track their progress through each trimester.

There have been several studies into the benefits of self-weighing. A 2015 systematic review found that frequent self-weighing had a positive correlation with weight loss.

Studies in 2013 and 2016 using smart scales also concluded that self-weighing has links with weight loss and reduced BMI.

A 2013 study notes that digital scales are more accurate than traditional dial scales. They may also have a clinical use — one 2016 study indicates that home smart scale measurements are comparable with in-person weight measurements performed by trained assessment staff.

Studies from 2017 and 2020 also suggest that smart scales may be useful for weight management in a healthcare setting.

Additionally, digital tools, including smart scales, may have benefits over traditional methods, such as availability and flexibility. These smart scales can connect with smartphone applications, showing promise for their use in weight management strategies, although not in standalone interventions.

However, it is worth noting that a 2015 systematic review suggests that weighing scales may have a negative impact when females and younger people use them. This may be particularly true for those with eating disorders such as anorexia or bulimia.

When considering purchasing a set of smart scales, people may wish to consider their budget, the body biometrics they want to measure, and whether or not they want the scales to connect with other smart devices or apps.

Cheaper smart scales tend to have fewer features, while more expensive models often feature enhanced connectivity to other devices and apps. A person can explore the type of smart scale they need and buy one that meets these needs.

While only able to measure body weight, traditional weighing scales are a good alternative to smart scales and are often cheaper. The main difference between conventional scales and smart scales is that the former offer no way to sync data with smartphone apps.

Learn more about digital and traditional bathroom scales.

Alternatively, people can contact a healthcare provider or use the body biometric measurement equipment that many gyms offer. One advantage of these methods is that individuals can usually receive advice from qualified professionals as soon as they measure their body biometrics.

Using smart scales is a convenient way to measure body biometrics and sync this data with popular fitness apps. This may help people manage their weight and keep track of their fitness and wellness goals.

There are many different smart scales available to buy online that are suitable for most budgets and individual needs.

Please note: Medical News Today does not imply warranty of fitness for a particular purpose or endorse any of these applications. Nobody at MNT has evaluated these apps for medical accuracy. The Food and Drug Administration (FDA) has not approved them unless otherwise indicated.