Best smart scales in 2024: Body composition scales for in-home use

A photo of a woman stood on a smart scale
The best smart scales (Image credit: Westend61)

The best smart scales can help you meet your 2024 fitness goals. Unlike old-school scales — those rickety apparatuses you'd step on with dread — the best smart scales are technologically advanced devices that zap pertinent health data directly to your smartphone. 

Beyond simply measuring weight, they offer detailed insights into wellness and fitness, including real-time health metrics. The most popular models now connect with the best workout apps and best fitness trackers to deliver results straight to your smartphone. Some even sync with Fitbit and Garmin.

Using biometric impedance analysis (BIA), the best smart scales can analyze your body tissue using electrical currents to measure your metrics. BMI, heart rate and body composition are just some of the stats you can access with them. 

We've tried and tested the best smart scales around, noting the pros and cons of each, how they fared and whether they're worth parting with your cash for. Read on to get the lowdown on popular models from Withings and Sportneer and to discover how a digital scale might improve your life. 

The quick list

Best smart scale overall

A photo of the Withings Body Plus smart scale with the phone appTom's Guide Awards 2022 logo

(Image credit: Withings)
The best smart scale overall

Specifications

Connectivity: Bluetooth, Wi-Fi
Size: 12.8 x 12.8 inches
Android/iOS: Yes/Yes
Max Users: 8
Stats: Weight, BMI, heart rate, weather
Max Weight: 396 pounds
MyFitnessPal Compatible: Yes
Batteries: 4 AAA

Reasons to buy

+
Well-designed app
+
Useful stats on-display
+
Pregnancy mode
+
Stylish design

Reasons to avoid

-
Small display

Overall, the Withings Body Plus is the best smart scale. It sports an attractive design, gathers more information than any other scale and presents the data in an easy-to-understand app. 

Each and every weigh-in appears in the companion Health Mate app automatically, via Wi-Fi or Bluetooth sync. And with your measurement history available at any time, you can see what parts of your routine are bringing you your desired results. The Withings Body Plus also has a useful pregnancy mode, which can give you readings without raising safety concerns when you're expecting.

For an upgrade, the $150 Withings Body Cardio offers heart health features, including a Pulse Wave Velocity measurement that is only available to users in the European Union. That data can be an indicator of hypertension, but the scale itself doesn't diagnose medical conditions.

The Withings Body+ won our best smart scale award in the Tom's Guide Health and Fitness awards because it's a joy to use, and a valuable asset to anyone looking to keep an eye on their goals. 

Read our full Withings Body+ review

Best smart scale for budget

a photo of the Wyze Scale X in the homebest value

(Image credit: Future/Tom's Guide)
The best budget smart scale

Specifications

Connectivity: Bluetooth
Size: 12 x 12
Android/iOS: Yes/Yes
Max Users: 8
Stats: 13, incl. weight, BMI, heart rate
Max Weight: 400 pounds
MyFitnessPal Compatible: No
Batteries: 4 AAA

Reasons to buy

+
Affordable
+
ITO coating improves accuracy of results
+
Addition of muscle mass percentage from previous scale models
+
Addition of luggage, pet, and baby mode
+
Expanded health app compatibility

Reasons to avoid

-
No built-in wi-fi
-
Wyze app could be more informative

The Wyze Scale X is among the newest budget smart scales from Wyze, and it's got one stand-out improvement — the option to track your muscle mass percentage. Of course, you could always figure this number out on your own by dividing muscle mass by body weight. But if you don’t feel like pulling out your calculator, shilling out an extra $10 is worth it. It's also compatible with Fitbit, whereas the previous Scale S isn't. 

All of this in-depth body data is displayed clearly within the app, with a body weight trend graph and dedicated sections for each metric. Tapping on a section will show your results, along with a slider bar and a definition of the specific measurement. It's an easy-to-use scale, with the option to store eight different profiles. There are also luggage, pet, and baby modes, which we appreciated during testing (especially when packing for a long-haul flight). 

The downsides with this cheap and cheerful smart scale is the app, which doesn't really give you an awful lot of information to support the wealth of data. While it’s great for a user to know their muscle mass, there’s little information there to indicate whether that number is considered acceptable for overall health. This is nit-picking though, all-in-all, it's a fantastic, affordable machine. 

Read our full Wyze Scale X review

Best smart scale runner-up for budget

Wyze Scale

(Image credit: Tom's Guide)
The runner-up best budget smart scale

Specifications

Connectivity: Bluetooth
Size: 12 x 12
Android/iOS: Yes/Yes
Max Users: 8
Stats: 12, incl. weight, BMI, heart rate
Max Weight: 400 pounds
MyFitnessPal Compatible: No
Batteries: 4 AAA

Reasons to buy

+
Extremely affordable
+
Supports up to eight profiles
+
Apple Health and Google Fit integration
+
‘Safe mode’ for pregnant users

Reasons to avoid

-
No Wi-Fi connectivity

The Wyze Scale S is another excellent budget pick because it's loaded with features and costs a mere $20. The Wyze Scale S supports a whopping 12 health metrics, including weight, body mass index (BMI), heart rate, muscle mass, body water percentage, lean body mass, bone mass, visceral fat, and more. It looks as good as the Withings Body Plus, and while its display and app is a bit more basic, it includes Apple Health and Google Fit integrations that can help you see the full scope of your fitness journey.

We wish the Wyze Scale had Wi-Fi connectivity so we didn't need to keep our phone nearby for data syncing, but that’s a minor qualm. This is a great pick for your first smart scale purchase and will cost you less than most other fitness equipment on the market. 

Think of this as the little brother of the newly released Wyze Scale X — the two are very similar, but the newer model has the addition of muscle mass percentage. Of course, if you don't want to pay the extra $10, you could always figure this number out on your own by dividing muscle mass by body weight. 

Read our full Wyze Scale S review.

Best smart scale for runners-up

A photo of the Renpho body fat scale and phone with app

(Image credit: Renpho)
The runner-up smart scale

Specifications

Connectivity: Bluetooth
Size: 11 x 11 inches
Android/iOS: Yes/Yes
Max Users: Unlimited
Stats: eight, BMI, body fat %, fat-free body weight, subcutaneous fat, visceral fat, body water %, skeletal muscle %, muscle mass, bone mass, protein %, BMR, metabolic age.
Max Weight: 396 pounds
MyFitnessPal Compatible: Yes
Batteries: 3 AAA

Reasons to buy

+
Seamless connectivity
+
Well-designed informative app
+
13 body composition indexes
+
Unlimited profiles

Reasons to avoid

-
No odd numbers and rounds up weight
-
No WiFi on basic model
-
All users must use the same app login

The Renpho Smart Body Fat Scale is the next best thing for most fitness buffs. It's easy to use and provides a breadth of information for those who want to track their body composition changes. There are 13 metrics tracked using the scale’s built-in bioelectrical impedance analysis tech to measure body fat percentage, skeletal muscle percentage and overall muscle mass, fat-free body weight, subcutaneous and visceral fat, body water, bone mass, and more. 

The large LED display is clear and easy to read, instantly showing weight. To see additional metrics, you’ll need to have the app connected and your phone with you, as the scale’s display only shows body weight. 

If detailed and in-depth metrics about your health are important to you, the Renpho scale is an easy choice to make. It is affordable, hassle-free, and extremely informative. The ability to track trends and save or share them allows for informed decision-making when you are working towards various health goals. 

Read our full Renpho Smart Body Fat Scale review

Best smart scale for value

Best smart scales: Withings (Nokia) Body

(Image credit: Withings (Nokia) Body (Credit: Withings))

5. Withings Body

The best smart scales for value

Specifications

Connectivity: Bluetooth, Wi-Fi
Size: 12.8 x 12.8 inches
Android/iOS: Yes/Yes
Max Users: 8
Stats: Weight, BMI, weather
Max Weight: 396 pounds
MyFitnessPal Compatible: Yes
Batteries: 4 AAA

Reasons to buy

+
Easy set-up
+
Health Mate app lets you easily see trends
+
Accurate weight and weather data
+
Pregnancy mode

Reasons to avoid

-
Display could be larger

If you don't need a scale with quite as many features, Withings' $59 Wi-Fi scale, Withings Body, delivers the basics in a stylish package. The scale measures your weight, of course, and does so accurately.  We compared it to the $150 Body Cardio and a dumb (er, not Internet-connected) $20 digital scale, and the scale was within 0.2 pounds of both.

The Body, which comes in black or white, has a 2.4 x 1.6-inch display that flashes your weight, weight trend (up or down), BMI and the weather forecast. That's useful if you're weighing in at the beginning of the day before you head outside. The screen isn't the biggest, but it's easy to read and the numbers are big and bright.

The scale syncs with the Health Mate smartphone app, which is where its Wi-Fi connection comes in handy. There you can view your data as a dashboard and see how your weight and BMI fluctuate over time. You can also set goals and pair the scale with apps such as MyFitnessPal. And like Withings's higher-priced scales, the Body offers a pregnancy mode.

The Body doesn't measure your heart rate or your home's air quality, but those are bonus features you can do without to save some money. Plus, this scale works with both iOS and Android devices.
  

Best smart scale for reliability

A photo of the Eufy P1 smart sclae

(Image credit: Future)
A reliable and affordable smart scale

Specifications

Connectivity: Bluetooth
Size: 11 x 11 x 0.9 inches
Android/iOS: Yes/Yes
Max Users: 16
Stats: Weight, BMI, BMR, body fat percentage
Max Weight: 397 pounds
MyFitnessPal Compatible: No
Batteries: 3 AAA

Reasons to buy

+
Seamless connectivity
+
Easy-to-use app 
+
14 body metric measurements
+
16 user profiles

Reasons to avoid

-
No pregnancy mode
-
No athlete mode
-
No Wi-Fi connectivity

Eufy's Bluetooth scale, which pairs effortlessly with the EufyLife app for iOS and Android, displays your weight almost instantly on-screen. As one of the best smart scales, it nailed the weigh-in. The BodySense scale then syncs that number, along with a host of other metrics, to the app. Those other data points include BMI, what percentage of your body fat is made of water, and how much of your weight is muscle mass, bone mass and body fat mass.

The downside with the Eufy P1 Smart Scale, however, is the lack of pregnancy and athlete modes, which give better readings based on your body composition. If you're really into sports like weightlifting, the chances are your readings will be slightly off, and this might not be the scale for you. 

That said, the Eufy Smart Scale P1 is a solid choice for anyone who does not require athlete mode. It is affordable, very user-friendly, and provides all the basic information you need plus more data in the app.

Read our full Eufy Smart Scale P1 review

Best smart scale for Fitbit

Best smart scales: Fitbit Aria 2

(Image credit: Fitbit Aria 2 (Credit: Fitbit))
The best smart scale for Fitbit users

Specifications

Connectivity: Bluetooth
Size: 11.8 x 11.8 inches
Android/iOS: Yes/Yes
Max Users: Unlimited Fitbit App users
Stats: Weight, BMI, body fat percentage
Max Weight: 397 pounds
MyFitnessPal Compatible: Yes, indirectly, through Fitbit app syncing
Batteries: 3 AAA

Reasons to buy

+
Uses Fitbit’s advanced app
+
Attractive design
+
Easy to use

Reasons to avoid

-
No WiFi
-
No body composition measurements

The Aria Air is Fitbit’s answer to the digital body weight scale, designed to sync with the Fitbit app and provide data to the collection of information gathered via your Fitbit smartwatch.  

The Aria Air is an attractive Bluetooth scale that measures body weight and calculates BMI. Although you can use the Aria Air without owning one of their fitness tracking watches, the scale is meant as a companion device to one of the best Fitbits. That said, the Aria Air lacks metrics such as body fat, muscle mass, bone, and water weight. 

The scale takes several seconds to display your weight, which is annoying. It also lacks support for pregnant women. But if you're deeply embedded in the Fitbit ecosystem, the Aria Air is worth a look.

Read our full Fitbit Aria Air.

Best smart scale for style

Best smart scales: QardioBase 2

(Image credit: QardioBase 2 (Credit: Qardio))

8. QardioBase 2

Most stylish smart scale

Specifications

Connectivity: Bluetooth, Wi-Fi
Size: 13.4 inches in diameter
Android/iOS: Yes/Yes
Max Users: 8
Stats: Weight, BMI, body fat percentage, muscle, bone, water composition
Max Weight: 396 pounds
MyFitnessPal Compatible: Yes
Batteries: Rechargeable (microUSB)

Reasons to buy

+
Stylish design
+
Unique feedback modes
+
Collects a slew of metrics

Reasons to avoid

-
Takes several seconds to display weight

The best smart scale for those who care about design, the new QardioBase is about an inch larger in diameter than its predecessor, which makes it more stable. This version is also rechargeable and lasts up to a year on a charge instead of needing all those batteries.

The QardioBase 2 is one of the most stylish scales around, if you care about what you're looking at when you weigh yourself. A scale takes up a not-small amount of space in your bathroom, so at least this one looks good.

However, one drawback to QardioBase 2 compared with other smart scales is the time it takes to display your weight on the display, which is located in the center of the device (where you stand). In testing, it took about 12 seconds for a number to pop up, rather than the near-instantaneous readings we get from other smart scales.
 

Best smart scale for cross-platform

A photo of the Rollibot Rollifit Smart Bodyfat Scale (F8)

(Image credit: Future)
An inexpensive cross-platform scale

Specifications

Connectivity: Bluetooth
Size: 11.9 x 11.9
Android/iOS: Yes/Yes
Max Users: Unlimited
Stats: Eight metrics, including weight, BMI, BMR, bone mass, visceral fat
Max Weight: 400 pounds
MyFitnessPal Compatible: No
Batteries: 3 AAA

Reasons to buy

+
Seamless connectivity
+
Simple to use app 
+
Unlimited user profiles
+
Not suitable for children 

Reasons to avoid

-
No Wi-Fi connectivity
-
No athlete mode

RolliBot is an unfamiliar name to most buyers, but the company's attractive Bluetooth Rollifit F8 scale is attractively priced. Other scales are worth the extra money, but the F8 is a decent option that works with the biggest health apps: Apple Health for iPhones, Google Fit on Android and Fitbit’s cross-platform app.

The Rollifit F8 has a slightly smaller footprint than most, coming in under 12 inches, and both black and white models of the scale appear to lack a display until you step on the tempered glass. The display shows just one metric: your weight.

The additional stats, such as visceral fat and bone mass, are interesting to see in the app's dashboard, although I'm not convinced they're accurate.

Our biggest issue with the Rollifit F8 is its lack of athlete mode, which makes the scale a no-go for anyone into weightlifting, as it'll display inaccurate data. During testing, we didn't love the sad face emoji every time we stepped onto the scales and found the weight-loss advice unsolicited. As there is no WiFi connection either, the Bluetooth can make the scale slightly difficult to sync. 

Read our full Rollifit F8 scale review

How to choose the best smart scale for you

A smart scale isn’t a device you want to replace often, so you want it to be reliable, well-rounded and fill all your fitness tracking needs. In other words, don’t let price be your ultimate decision-maker. It’s worth it to stretch your budget for one of the best smart scales that will last you at least a few years, and supports the exact data you’re interested in following. Review all the metrics a given smart scale offers before buying.

That said, if you’re in temporary living quarters or are working towards a short term fitness goal, a budget smart scale, like the Wyze Scale, is an excellent choice. It won’t last a lifetime but will satisfy your immediate needs. 

Another thing to pay attention to is whether a smart scale has some kind of ‘safe mode’ for people with pacemakers or people who are pregnant. Safe mode, or ‘weigh only’ mode, disables bioelectric impedance analysis (BIA), which uses a weak electric current to determine body fat percentage and could pose a safety threat to certain users.

Fitbit users could even connect one of the best Fitbits to Fitbit smart scale models, helping you keep on top of your daily health and fitness stats. 

How we test the best smart scales

For our review of the best smart scales, we take a number of factors into consideration. First, we check that the scale offers an accurate reading using a dumber digital scale, the highly rated EatSmart digital bathroom scale. If the readings are within a fraction of a pound of each other, we can recommend them. The readings shouldn't take more than few seconds, either.

Aside from price, we also explore the variety of metrics a scale offers, how many unique users the scale supports, the scale’s connectivity options and the user-friendliness of the scale’s companion app. We like to see whether the app provides background information on your body’s statistics, too. Plus compatibility with third-party health programs plays a role in our testing.

The last thing anyone needs is more anxiety, so we look for the best smart scales to make stepping on the platform less intimidating. A smart scale’s metrics should reveal to you that your body is more than your weight.

Q&A

Why get a smart scale?

Smart scales can do so much more than just report back to you on your current weight. Moreover, weight can fluctuate throughout the day based on various factors like water retention. A smart scale can provide feedback detailed metrics to health apps on your phone and send data wirelessly to your devices. 

Obsessing over a number on the scales is not a true indication of health, but if your goal is to lose weight, a smart scale could help you understand your body. Many linked apps can also display the data in helpful and motivating ways, which could help you hit your goals. 

Not fussed about the numbers? Stick to a simple set of scales and save your dollars.

More from Tom's Guide

Get healthy and in shape with our other fitness gear guides:

Wearables
Best smartwatches | Best running watches | Best Garmin watches | Best sports watches | Best fitness trackers | Best cheap fitness trackers | Best Fitbit | Best cheap running headphones | Best running headphones

Workout equipment
Best exercise bikes | Best Peloton alternatives | Best adjustable dumbbells | Best resistance bands | Best foam rollers | Best treadmillsBest yoga mats | Best weighted jump ropes | Best smart scales | Best shoes for Peloton and indoor cycling | Best water bottles

Apps and exercises
Best workout apps | Best running apps | Best 10-minute ab workout | How to lose belly fat | Best tabata workouts | Best 30-minute workouts | Best beginner HIIT workouts