The 10 Best Smart Bathroom Scales: For Weight Loss and Fitness Goals

These days, a smart bathroom scale can report far more than just your weight. In this ranking, we provide the facts and expert opinions so that you can decide whether smart bathroom scales are worth their cost. And if so, which model offers the best value-to-feature ratio.

When it comes to reaching your health and fitness goals, your bathroom scale should be reliable and accurate. But if you want more assistance and guidance in monitoring your body fat percentage and other health data, it may be time to consider a smart scale for your bathroom.

Smart technology has come a long way since the mechanical scale. And, as it turns out, it doesn’t have to cost an arm and a leg to get with the times. (But if you do prefer to keep it old school, don’t miss our overall ranking of the best bathroom scales.)

Smart scales provide all kinds of health data designed to help you achieve your fitness and health goals. 

Available with integrations for both iPhone and Android apps, smart scales help you stay on track with your personalized health regimen. Once hooked up to Bluetooth or Wi-Fi, these scales can measure not only your weight, but also your body fat percentage, Body Mass Index (BMI), muscle measurements, hydration status, bone mass, nutrition needs, and more. While some do cost a pretty penny, quality smart scales also sell for as little as $20.

Key Point: Smart technology has turned bathroom scales into coaches rather than just judges. They provide more constructive feedback and more in-depth data needed to build a full understanding your body’s health.

Table of Contents

The Technology of Smart Scales

The 10 Best Smart Bathroom Scales for weight loss and pregnant women

A smart scale makes a perfect addition to any smart home (check out our smart home guide for more information).

A smart scale is hooked up to your phone’s Bluetooth or home Wi-Fi network, and the data it collects on your body fat percentage, BMI, water weight, and nutrition levels are stored onto both the scale and an accompanying app.

Some smart scales have proprietary apps from the manufacturer, and others cater to various third-party apps like Google Fit, Apple Health, and MyFitnessPal.

You’re probably curious about how this all works. How can a bathroom scale know so much about your body just by having you stand on a metal platform?

It’s all thanks to a little thing called BIA, or Bioelectrical Impedance Analysis. This system uses electrical currents to measure the body’s overall health. Once you step on the scale, a current is sent from the bottom of your feet through to your muscles, joints, fat, and all the other parts of your body.

By testing the speed at which this electrical current travels, the smart scale can tell what parts of your body need improvement and which ones are in tip-top shape.

Key Point: Smart scales use bioelectrical currents to measure key health factors in the human body.

How Do Smart Scales Work?

Best Smart Bathroom Scales to read body fat percentage and other health data

The current travels more slowly through fat than through muscle.

Gender, age, and height are also non-health related factors that affect the speed of the current. But the scale, being the innovative little machine it is, asks for that information in advance so that it can take these factors into account. 

Each calculation is personalized for the individual standing on the scale.

The idea is that your smart scale functions as a health and fitness coach, rather than reporting just your weight — which isn’t very helpful without more information. To understand the context of your weight, you’ll need to better understand your body fact percentage, body composition, gender, and body age.

Similar to getting an x-ray or walking through a security checkpoint at the airport, you don’t feel this electrical current, so there’s no reason to fear getting shocked. However, the system can be harmful for young children under the age of 10, women who are pregnant, or anyone with a pacemaker.

Luckily, there are smart scales with special settings that accommodate those circumstances — so there’s no need for anyone to be left out of the fun.

Takeaway: Smart scales measure a variety of factors related to your weight and overall wellness such as body fact percentage, body composition, gender, and body age.

What you need in a smart scale

Your needs as an individual should be taken into account when choosing a smart scale. In addition to pregnancy or having a pacemaker, you should also be thinking about what your health and fitness goals are.

Athletes, marathon runners, and personal trainers might want a scale that’s a little more high-tech and includes not only body fat, BMI, muscle mass, and nutrition data, but also measures air quality, hydration, and heart rate.

Others are looking for a scale that will encourage healthy living among their family members.

If that sounds like you, look for a scale that provides the basic health metrics, has support for numerous users, and includes a family-safe setting for younger kids. Some of the best smart scales will store data for up to eight users.

Summary: The best smart scales include a variety of awesome features to help you stay on top of many different variables of your body’s health.

The best smart scales for analyzing body composition

Benefits of a smart scale

The electrical currents and app integration can sound complicated, but customers are finding the user experience to be quite intuitive. There’s a reason these smart scales are becoming so popular.

Your body is so much more complex than old-fashioned analog scales can account for.

Think about when you go to the doctor and get a physical. There’s a lot of steps that go into making sure your body is working the way it should. Smart scales aim to simplify that process and provide you with the necessary health data needed to take better care of your body. 

While a smart scale certainly shouldn’t be used as a replacement for doctor check-ups, it can help you understand what your body needs, and what areas needs your attention.

And while personal trainers can charge hundreds of dollars, these smart scales only cost between $20 and $130. They’re one of the most affordable ways to stay on top of your body’s health.

In fact, studies show that smart scales can deliver positive results when used responsibly. Another study demonstrates that smart scales might be a crucial tool for medical professionals to monitor the health of their patients while they’re at home.

Key Point: As we develop a deeper understanding of health and wellness, it’s important that we be able to measure more factors related to health beyond our weight.

The best smart scales for analyzing body composition


Because smart scales are built to deliver personal, unique results for each individual, it’s extremely important to choose a scale that has the features you need. Each scale is designed for a specific purpose. Choosing the wrong scale could mean that you don’t get the features that you need to monitor your health and fitness goals.

To help you make your decision, we carefully analyzed reviews and ratings from health professionals, industry experts, and everyday folks like you. Here are the metrics that we used to compile our ranking of the 10 best smart scales:

  • Battery life: You don’t want to be changing batteries every week.
  • Technology integration: The apps should be easy to use and compatible with the technology at your disposal. Don’t pick a scale that only partners with an iPhone 7 when you have an older phone or an Android.
  • Design: You’re going to see this scale everyday, so you should like how it looks in your home. The size and comfort of the scale are also important considerations.
  • Measurement data provided: While not everyone will need to know their bone density or water weight, your scale should have the measurements you need to keep track of your fitness progress.
  • Additional features or modes: To make the technology more inclusive, certain scales cater to specific physical conditions, like being pregnant or having a pacemaker.  Be sure to choose a scale with features that matches your needs.
  • Value-to-Cost Ratio: If you’re really only interested in tracking body composition, then you won’t need a top of the line smart scale with every feature available. We’ve ranked the best smart scales according to the relationship between the number of features offered and the price tag of the model.

Summary: We used these 6 factors evaluate and rank the best smart scales included in this article.

Best Smart Bathroom Scales


Fitbit Aria 2

You’ve likely heard of Fitbit thanks to the brand’s wristband, one of the most popular wearable fitness trackers on the market. If you already own a Fitbit wristband (or if you want an excuse to buy one), the Fitbit Aria 2 offers great features to aid in your fitness routine.

The Aria 2 offers all the best features of smart scales: simple smartphone app integration (the scale will sync with data from your Fitbit wristband), detailed health metrics (weight, body fat percentage, body mass index, and lean mass), and support for numerous users (up to 8). The estimated battery life is about one year. It’s water and dust resistant, but not waterproof.

Its design is sleek and minimalistic.

The only real complaint we have about the Aria 2 is that it occasionally requires firmware updates from Fitbit, which can be an annoyance. This is a minor issue, though, and one that we’re willing to put up with considering how much we love everything else about the product.


  • Easy integration with Fitbit app
  • Support for up to 8 users
  • Clean, simple design


  • Can be slow to recognize users
  • Expensive
  • Firmware updates required

Withings Body+ Body Composition Scale

This is a scale for the whole family. The Withings Body+ works with up to 8 individual users and, uniquely, it has a “Baby Mode” and “Pregnancy Mode” to accommodate young and growing families. This scale is also enabled with both Bluetooth and Wi-Fi for versatile connectivity.

Withings’ scale is not only highly compatible with different age groups, but also with over 100 health and fitness apps, including MyFitnessPal, Apple Health, Fitbit, Google Fit, and more. The scale’s graph-like design guides users to the correct stance so the scale can more accurately measure weight, body fat, and water percentage, along with muscle and bone mass.

Using iOS 8 and Android 5 or higher, Withings also provides nutrition tracking so users can set a weight goal and manage their daily calorie budget. But the functionality can be a bit overwhelming for some (do we really need to know the weather forecast when we get on the scale in the morning?)

The fact remains that this smart scale ranks as one of the best selling smart scales in the United States and has received praise across trusted media like ranking as the Most User Friendly on Men’s Health Magazine. 


  • Safe for pregnant women
  • Compatible with 100+ apps
  • Nutrition Tracker included


  • Requires newer iPhones/Androids
  • A bit pricey
  • No privacy setting for data

Garmin Index S2 Smart Scale

In addition to its 9 months of battery life, easy-to-read nighttime screen display, and Wi-Fi-based connectivity, Garmin’s smart scale has a lot to offer when it comes to being your in-bathroom personal trainer. Following its “full circle of wellness” philosophy, Garmin records health stats on Garmin Connect, the company’s free app that connects users with other people in the Garmin community.

Out of all the smart scale apps, Garmin’s is one of the most user-friendly and easy to read. It can store up to 16 user profiles and  clearly lists your measurements for body weight, BMI, body fat, water percentage, bone mass, and skeletal muscle mass. The app also shows you where you rank among those of the same height, age, and gender.

Because it’s one of the more simple smart scales, it’s a good fit for those who are just starting out on their fitness journey and don’t want a lot of overwhelming statistics.

That being said, it is a little off-putting that a smart scale that leans toward beginners is one of the pricier options on our ranking. The color display features high-resolution as part of its sleek design and accommodates 16 users. Uses 4 AAA batteries.



  • 9 months of battery life
  • Supports 16 users
  • Easy-to-read app


  • Expensive
  • Not very visually appealing
  • Not for pregnant women

QardioBase 2 Wireless Smart Scale

QardioBase 2 Wireless Smart Scale for body composition

For all you soon-to-be moms out there, this is the smart scale we chose for you. While this scale does calculate muscle density, body fat, water weight, and bone mass, it aims to help the user focus less on the numbers and more on being happy and healthy.

This scale provides the option to display happy and sad emojis instead of numbers. This feature is especially appealing for parents who want to teach their kids a healthy lifestyle without focusing too much on concrete numbers. It’s also a plus for pregnant women who may not want to know how much they actually weigh, just that they are providing a healthy haven for their growing baby.

Another feature we love about this scale is its energy efficiency. QardioBase 2 doesn’t run on batteries and only needs to be charged about once a year, depending how often you use it.

Though this scale widely appeals to mothers and children, it’s worth noting that Men’s Fitness rated QardioBase 2 as one of the top smart scales.


  • Best for pregnant women & kids
  • Shows emojis instead of numbers
  • No batteries needed


  • Less standing space
  • Requires newer iPhones/Androids
  • Expensive

Greater Goods Bluetooth Smart Body Fat Scale

“Greater Goods” is certainly a fitting brand name for this smart bathroom scale. While it may not have everything a pro athlete needs for a fitness regimen, this is the right choice for someone looking to improve their health without overwhelming themselves with too many specifics.

And unlike other Bluetooth scales, the Greater Goods smart scale includes a 1:1 pairing, so each user’s data results are kept private.

This scale, which measures weight, BMI, body fat, lean mass, water weight, and bone mass, has been known to last upwards of 5 years. It automatically detects up to 8 users and is compatible with Android 5 or newer and iPhone 5S or newer, as well as with any iPad released in 2013 or later. But unlike some other scales, you don’t need another device to see your data — it appears right away on the LCD screen.

This is definitely one of the more durable smart scales on the market, with a large, tempered glass surface able to hold up to 400 pounds. It has a sleek black design that could match pretty much any decor.

Although it has less functionality than others on our list, it’s still a worthy choice, especially for its price point.


  • Data displayed on scale’s screen
  • Works with older smartphones
  • Data is kept private


  • Not for pregnant women
  • Doesn’t measure nutrition needs
  • Only uses Bluetooth, not Wi-Fi

RENPHO Bluetooth Body Fat Scale Smart

This smart scale, which syncs with Apple Health, Google Fit, and the Fitbit app, is an affordable option for nutritionists and serious runners. The scale records 13 measurements in total, including body weight, BMI, body fat percentage, water percentage, skeletal muscle, fat-free body weight, muscle mass, bone mass, protein, basal metabolism, subcutaneous fat, visceral fat, and body age.

If you want to know just about everything there is to know about your body, this is your bathroom scale.

Supported for Android 4.3 and iOS 7 or above, RENPHO’s free app adds to the affordability and value of this scale. The product is FDA-certified and can store information for an unlimited number of users. You have the option to weigh yourself any time, even while your phone is disconnected, and the data from the weigh-in will sync to your device once you do reconnect.

It’s worth noting that there is no safety setting for those with special health conditions and concerns. Though it measures all kinds of metrics, the information doesn’t display on the scale itself — you’ll need to look at your phone to see it.


  • Affordable
  • Records 13 body measurements
  • FDA-certified


  • Not for pregnant women
  • Requires newer iPhones/Androids
  • Data not displayed on scale screen

FITINDEX Smart Wireless Digital Bathroom Weight Scale

Like RENPHO, the FITINDEX smart scale also features 4 electrode feet sensors to help with better measurement precision. Calculating body fat, water percentage, muscle mass, BMI, BMR, bone mass, Basal Metabolism, and Body Age, this scale is highly recommended for both bodybuilders and junior fitness fanatics.

It accommodates an unlimited number of users, so, as long as everyone is over the age of 10, the whole family can use it to take steps toward a healthier lifestyle.

FITBIT has its own app, called FITINDEX, that works with the scale and helps you to keep track of your results. The scale also offers a professional athlete mode. For the most accurate measurements, the scale should be placed on a hard, flat surface, like tile or wood. (Carpet is known to affect the reliability of the data.)

The maximum weight for this scale is just under 400 pounds, and the body fat percentage measurement is intended for users between 10 and 80 years old. The scale requires an Android 4.3 or an iOS 7.


  • Wide age range for scale use
  • Records 11 body measurements
  • Unlimited users


  • Limited in app partnerships
  • Unreliable on soft surfaces
  • Not for pregnant women

Yunmai Premium Smart Scale

This is the best smart scale for those who are looking to lose weight. Up to 16 unique users can track their weight loss progress as Yunmai measures their body fat, BMI, muscle, hydration needs, protein intake, bone mass, and more. Yunmai has over 5 million users and counting.

Before we get into all the details, we just have to point out how attractive this scale is. Everyone has their own tastes, of course, but if you ask us, the rounded edges and circular LED screen give this smart scale a futuristic look that keeps it ahead of the times. The “10 body measurements in 10 seconds” feature is proof that the scale isn’t just looks, either.

Yunmai is designed for adults: It doesn’t allow more than a basic weight measurement for anyone under the age of 18. The scale does support Fitbit and Apple Health, although it isn’t compatible with Apple Watch or desktop.


  • Stunning design
  • 10 measurements in 10 seconds
  • Multiple user modes


  • Not for use for anyone under 18
  • Not for pregnant women
  • Requires newer iPhones/Androids

iHealth Nexus Body Fat Scale Smart BMI Scale Digital Bathroom Bluetooth Weight Scale

iHealth Nexus’ highly sensitive scale makes for some of the most accurate readings on the market. iHealth’s smart scale automatically recognizes who you are the moment you step onto the weighing platform. If 2 people have a similar weight, they can just check their user number displayed on the screen. It supports up to 8 users.

Measuring body weight, body fat percentage, lean mass, BMI, body water, visceral fat rating, muscle mass, and bone mass, this smart scale registers weights anywhere between 11 and 400 pounds. It’s compatible with Apple Health & Samsung Health Apps. Because of its somewhat finicky maintenance requirements, it comes in at ninth place — but if accuracy is a top priority, this is a great option for you.

For accuracy you can trust, the iHealth Nexus Body Fat Scale Smart BMI Scale Digital Bathroom Bluetooth Weight Scale will have you meeting your weight loss goals in no time. The sensitive g-shaped sensors and algorithms give you precise results, unlike other brands.



  • Highly sensitive and accurate
  • Wide age range for usage
  • Automatic user recognition


  • High maintenance
  • Some question measurement accuracy
  • Trouble with connecting to phone for some

1byone Bluetooth Body Fat Scale

While the price does accurately reflect the simplicity of 1byone’s smart scale, 8 different body measurements is still pretty high tech. Plus, the Baby Mode provides an appealing feature to families. Users can also monitor the whole family’s health and fitness statistics on the 1byone health app. Data from the app can also be synced to Apple Health, Google Fit, and Fitbit.

1byone’s comprehensive health index measures body weight, body fat, water weight, muscle mass, BMI, BMR, bone mass, and visceral fat. While there is a baby-safe mode, pregnant women and those with any medical implants are discouraged from using this scale.

This smart scale, which closely resembles the FITINDEX, can support up to 10 users, and it’s compatible with iOS 8.0 or Android 4.3. Although it has less functionality than serious athletes will want, this is a simple, straightforward option for those looking to buy their first smart scale.


  • Baby Mode
  • Data can sync to outside apps
  • 8 body measurements


  • Requires newer iPhones/Androids
  • Not for pregnant women
  • Doesn’t measure nutrition needs

Frequently Asked Questions about Smart Bathroom Scales

If you’re still unsure whether a smart bathroom scale is the right choice for you, then consider our FAQ section below. RAVE answers any lingering questions that you might have.

How long do smart scales usually last?

Smart bathroom scales should last you a number of years — in some cases, up to 7 years — as long as you are maintaining the device properly. While the scales can do a lot of cool stuff, they are still very fragile pieces of equipment, and there are some common-sense precautions that come with that.

It’s important not to drop the scale or jump on it in any way. If you have kids in the house, make sure they know these rules.

If you’re going on a long vacation, packing for a big move, or otherwise planning not to use your smart scale for an extended period of time, you can remove the battery inside the device so it doesn’t risk leakage.

Despite the scale’s glossy appearance, it’s never a good idea to get it wet. Your smart scale relies on electrical currents and delicate sensors, so water is not exactly its best friend. Avoid using the scale right after getting out of the shower, and make sure condensation doesn’t build up on the scale during a nice steam.

How accurate are smart scales?

We’ve come a long way since the age of mechanical scales. Smart scales show not only your weight, but also very specific details about your body’s well-being, including fat and water weight percentages. Some even measure the cleanliness of the air you breath. But how accurate really is all that information?

Despite all their newfangled technology, these scales are first and foremost built for accuracy. When it comes to measuring weight, they are generally more reliable that analog scales.

To find your weight, the scale sends an electrical pulse through your body once you step on the platform. The speed of the current traveling through your body is what the scale uses to calculate your weight as well as your BMI, muscle mass, water weight, and other metrics.

Although they are far more sophisticated than analog scales, smart scales are not all-knowing machines, and shouldn’t be treated as such. Each scale will likely require you to manually input certain characteristics about each user, such as age, gender, and height. These user profiles must be accurate in order for the scale to give a trustworthy reading.

Are there any risks that come with using a smart scale?

For most people ages 10 and up, the electrical current that smart scales use is perfectly safe. There’s no electrical shock or uncomfortable sensation that comes with stepping onto a smart scale. However, young children, pregnant women, or anyone with a pacemaker or special fitness need should exercise caution when using a smart scale.

Luckily, there are certain smart scales that accommodate children, expecting mothers, and anyone with unique physical needs.

Smart scale models have pregnancy settings and “Baby Modes” for pregnant mothers and children under the age of 10.

What do smart scales measure?

Many smart scales stick to a basic 5 or 6 metrics. However, some will provide insight into 11 or 12 body measurements. For example, smart scales like the Yunmai and FITINDEX measure not only your weight, but also body fat, water weight, muscle mass, BMI, basal metabolic rate (BMR), bone mass, hydration, protein intake, skeletal muscle mass, and more.

Each smart scale has its own unique qualities, and it will be designed for a specific purpose. If you’re a pro athlete, personal trainer, marathon runner, or serious weightlifter, you won’t use the same smart scale as the average person who’s trying to lose a few pounds.

Jack Kelle

Jack is an entrepreneur, outdoorist, and animal lover with a background in philosophy, psychology, and business. He enjoys music, friends, and family. At RAVE, Jack works as the manager of marketing and content development.