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

Woman stood on a smart scale at home
(Image credit: Westend61)

The best smart scales help you keep tabs on more than just your weight. These scales have sensors to track your body composition, heart rate, and BMI, with the data easily accessible on your phone to track your progress. 

Most models even connect to some of the best workout apps so that you can see all your health and fitness stats in a single place, combined with the data recorded by your fitness tracker or smartwatch. 

But to see how accurate these scales really are, we put them to the test, checking the measurements against a reference scale and looking at how easily you can sync your data to your phone or fitness tracking app. 

Overall, we felt that the Withings Body Plus was the best smart scale for most people, but to get the most from it, you need to be invested in the Withings app and ecosystem. So, if you're after an alternative, we've rounded up our other favorite options to help you find the smart scales that are right for your goals.

The quick list

Best smart scales you can buy right now

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Best smart scale overall

Withings Body Plus smart scale with the phone app

(Image credit: Withings)
The best smart scale overall

Specifications

Connectivity: Bluetooth, Wi-Fi
Size: 12.8 x 12.8 inches
Users: 8
Max weight: 396 lbs

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.

Best budget smart scale

Wyze Scale X in the home

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

Specifications

Connectivity: Bluetooth
Size: 12 x 12 inches
Users: 8
Max weight: 400 lbs

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 Wi-Fi syncing
-
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. 

apping 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. 

Best smart scale for body fat

Renpho body fat scale and phone with app

(Image credit: Renpho)
Best for measuring body fat

Specifications

Connectivity: Bluetooth
Size: 11 x 11 inches
Users: Unlimited
Max weight: 396 lbs

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 Wi-Fi 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. 

Best value Withings smart scale

Withings Body

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

4. Withings Body

The best value Withings smart scales

Specifications

Connectivity: Bluetooth, Wi-Fi
Size: 12.8 x 12.8 inches
Users: 8
Max weight: 396 lbs

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

Eufy P1 smart scale

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

Specifications

Connectivity: Bluetooth
Size: 11 x 11 inches
Users: 16
Max weight: 397 lbs

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.

Best smart scales for Fitbit users

A Fitbit Aria Air smart scale on a hard surface

(Image credit: Future)
The best smart scale for Fitbit users

Specifications

Connectivity: Bluetooth
Size: 11.8 x 11.8 inches
Users: Unlimited
Max weight: 397 lbs

Reasons to buy

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

Reasons to avoid

-
No WiFi
-
No body composition measurements

The Fitbit Aria Air is the Google-owned brand's smart scale, designed to integrate nicely with your other Fitbit devices with the data neatly synced to your Fitbit app for monitoring and analysis. 

It's straightforward to use as well, with an easy set up and all you need is 3 AAA batteries for power. However, it doesn't sync the data via Wi-Fi, only by Bluetooth, so you'll need to your phone nearby to capture the recordings. 

Since it needs a direct connection to the Fitbit app, it also doesn't create individual profiles on the scales, making set up even quicker. But the major downside to this approach is that the scales can't measure anything other than your weight. 

So, if you're hoping to get more insights, like body fat or muscle mass, you'll need to look for an alternative scale. For the price, the Aria Air is disappointingly light on features, so it's best only for Fitbit users who just need weight measurements. 

Best smart scale for Garmin users

A Garmin Index S2 smart scale on a hard surface

(Image credit: Future)
The best smart scales for Garmin users

Specifications

Connectivity: Wi-Fi
Size: 12.6 x 12.2 inches
Users: 16
Max weight: 400 lbs

Reasons to buy

+
Wi-Fi data sync
+
Measures a lot of stats
+
Premium design
+
Works well with Garmin wearables

Reasons to avoid

-
Difficult to clean
-
Primarily only works with Garmin ecosystem
-
No pregnancy or baby mode

Like the Fitbit Aria Air, the Garmin Index 2 is designed to work seamlessly with your favorite Garmin wearable devices. The data syncs via Wi-Fi to your Garmin account, so you can view the measurements alongside your other health and fitness data. 

You can set up multiple users (up to 16 profiles) and the scales can automatically detect who is using them. The small display then cycles through your weight, BMI, trends, and other metrics like body fat percentage and muscle mass. 

So, it has the edge over the Fitbit device here, but suffers from the same setback or draw, depending on your point of view: its integration with other Garmin devices. There are other smart scales, like the Eufy P1, which capture the same measurements, but without tying you into a specific ecosystem. 

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.

FAQs

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.

Are cheap smart scales accurate?

During testing, the budget-friendly smart scales were reasonably accurate. Of course, there's always some variation between models, but the relative accuracy (measurements on a single device) is the most important factor to consider, as this will help you keep track of changes. 

Generally, the main reason that the scales are cheap is that they lack the features of the more premium models. So, some don't come with Wi-Fi and only sync via Bluetooth, or don't have multi-user support. 


James Frew
Fitness Editor

James is Tom's Guide's Fitness Editor, covering strength training workouts, cardio exercise, and accessible ways to improve your health and wellbeing. His interest in fitness started after being diagnosed with a chronic illness, and he began focusing on strengthening his core, taking regular walks around the city, and practicing meditation to manage the symptoms. He also invested in fitness trackers, home workout equipment, and yoga mats to find accessible ways to train without the gym. Before joining the team at Tom’s Guide, James was the Fitness Editor at Fit&Well, where he covered beginner-friendly exercise routines, affordable ways to boost your wellbeing, and reviewed weights, rowing machines, and workout headphones. He believes that exercise should be something you enjoy doing, so appreciates the challenge of finding ways to incorporate it into everyday life through short muscle-building sessions, regular meditation, and early morning walks.

With contributions from