Fitbit Aria 2 Wi-Fi Smart Scale

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The Fitbit Aria 2 Wi-Fi smart scale is a strong addition to the Fitbit family.  If you already own a Fitbit smartwatch this is a great smart scale to consider. Similar to how PC and Mac products integrate together seamlessly its a great idea to contemplate adding the Fitbit Aria 2 to the family if you already own a Fitbit smartwatch, and even if you don't you can still get lots of use out of this scale. It's a Wi-Fi equipt scale that measures weight, body fat percentage, lean mass, and BMI all in one step. It does, however, takes slightly longer than other smart scales to measure all your readings as well as having issues with inaccurate body fat percentage readings.

Along with wireless syncing, being compatible with loads of different Fitbit trackers, the Fitbit app it comes with holds up to 8 unique user profiles so everyone in the family can have their own account. The Fitbit app will keep track of your weigh-ins and measurements over time and give you the motivation you need to reach your goals with easy to read charts and graphs that are available on the Fitbit dashboard. To top it all off the scale comes in both black and white color choices to match your bathroom decor scheme.

Editor's Pros & Cons

Easy Setup

Tracker Compatible

Multiple Users

Wireless Syncing

Multiple readings


Slow Sync

Inaccurate reading


Like most traditional smart scales this has a square shape with rounded out corners, a glass scale top, an ABS plastic bottom housing, and 4 detachable feet. Along the underside of the scale, you will also find the battery compartment. It only weighs 4.7 pounds which is quite light, is 1.3 inches thick and is 12.3 x 12.3 inches. It has a beautiful scale top design that is at first glance is slightly reminiscent of pacific northwest art. It's a design of flowing squares that are used for the Bioelectrical impedance analysis reading. The digital display is encased in a metallic silver ring which feels very high tech and space-age, like when you used to watch the Jetsons. When the display turns on with the white scale it glows white and shows your readings in black, but is the opposite for the black scale, having a black background and white readings. This is a small design consideration but it feels like they really tried to make the scale as aesthetically pleasing as possible.


The Fitbit Aria 2 comes with features like weight tracking, body fat percentage, lean mass, and BMI. Body fat percentage readings help you keep track of your overall health and know if you are in a healthy percentage of body fat. Lean mass is your weight minus the weight of your body fat. BMI is a number calculated by your height and weight, based on the corresponding BMI chart you will know if you are underweight, overweight or in a healthy weight range.
All the readings listed above will be automatically synced to your Fitbit app every time you step on the scale once you have made a unique user profile for yourself. You can make up to 8 unique user profiles so all of your friends and family can have their own account. The biggest and most important feature by far is the compatibility with the Fitbit smartwatches. They offer 10 different styles of trackers that are compatible with the Aria 2, everyone has different features, colors, and styles. You really get the most out of this smart scale when you have it paired with a Fitbit smartwatch as it will give you a more in-depth look at your health as a whole by being able to track steps, activity level, sleep patterns, calories burned, and so much more depending on which model you select.

Compatible Trackers

By far the main reason most people look into getting the Fitbit Aria 2 is that they already own a Fitbit smartwatch. It allows you to have the full experience tracking your health from every angle. Currently, Fitbit offers 10 different styles of trackers on their website. They range from kids, sporty, and stylist types of options and a lot of them have different colored wristbands you can swap out to truly customize your look. Most of the watches offer a heart rate reading, cardio fitness level, sleep tracking, walking pace, exercise mode, guided breathing sessions, activity logging, calories burned, food logging, female health-tracking, timer and stopwatch, wireless sync, and notifications, as well as being waterproof and batteries being able to last up to 5 days before needing a charge.

Some of the higher-end models will have a bigger display screen which allows for different apps and well as all the basic features. They include different apps like fitness, sports, news, travel, and transit-related. You can experience on-screen workouts that you can follow along with, store up to 300+ songs if you want to play music, and have tap payments set up on your watch so you can leave the house without a wallet. Along with that, they have Bluetooth features so you can sync it with wireless headphones if you want to play music off of it.


The Fitbit Aria 2 has a smooth tempered glass scale top and an ABS plastic bottom housing. These two materials are pretty typical these days when it comes to smart scale materials. You will be hard-pressed to find one without a glass top, if durability is a concern the tempered glass is quite durable unless you are extremely rough with it or drop it by accident. The design running through the top is for the BIA function and the bottom has 4 non-skid feet.

App Features

There is a total of 33 different apps you can sync with the Fitbit Aria 2 or any Fitbit trackers you may have. They have options that range from fitness tracking, food & weight, wellness, medical, and games & rewards. Here are some of the most popular apps that customers like; My Fitness Pal is quite a popular app with many other smart scales so it's no surprise that such a large company like Fitbit partnered with them to make it compatible with their products. The app is great for counting calories and keeping track of what you eat, if you enter in a certain calorie goal it will let you know how many calories you have left for that day. Fitstar is a personal training app that offers a variety of different video workouts you can follow along with, the coolest part about this app is the “freestyle” mode that gives you a 5-7 minute workout you can do no matter where you are. Map My Run is the gold standard of running apps, it will track your route and let you know the distance you ran and how long it took you. It has such a huge user database that it can generate a route for you from popular routes that other users have taken.


Customers have not really had any issues with the weight-in accuracy of this smart scale, however, there were some complaints about the body fat percentage measurement being incorrect. One customer reported that on a previous smart scale they owned they got a body fat percentage of 8-9% but the Fitbit Aria 2 was reading their body fat percentage at 15-16%. This is quite a big difference in the two readings, if the body fat percentage is something that you specifically are looking for in a smart scale this may not be the scale for you. Do keep in mind that this scale will not give you an accurate weight reading on carpet and its best to use it on a hard surface.


Contrary to some popular belief glass is actually quite a durable material, especially tempered glass. Unless you accidentally drop the scale from a high up or drop anything heavy onto it you should have no problems with it holding up. If you do have an accident and the glass shatters it is tempered so no one will get hurt. Tempered glass when broken will turn into little balls of glass instead of sharp shards, while you can still get small cuts from tempered glass shattering it's only going to be a small superficial cut that will heal easily versus a serious cut that a glass shard can create. The bottom of the scale is ABS plastic which is very durable and will take all the wear and tear you throw at it. To top it all off the Fitbit Aria 2 smart scale is also water-resistant which makes it perfect to keep in the bathroom. Since most people store their scales in the bathroom it’s ultra-handy that is one is advertised as water-resistant so it will withstand the condensation of a humid bathroom due to hot showers. This, however, does not mean it's waterproof so make sure you don't splash it with large amounts of water or submerge it.

Ease of Use

Setup with the Fitbit Aria 2 is incredibly easy, even more so if you already own a Fitbit tracker. Just download the Fitbit app onto any smartphone running iOS or Android operating systems, open the app and hit the plus button in the top right-hand corner to set up an additional device. After that's done just pull the plastic tab out from the battery housing and choose a Wi-Fi network after you see the prompt. Because of the wireless syncing via Wi-Fi, this scale is incredibly easy to use. Just set up your unique user profile and your data will sync wirelessly to your Fitbit app. No need to turn the scale on and off with a button, just stand on the scale top and it will automatically wake up from sleep mode. The scale will be about to automatically tell who is standing on it without needing to even open the app. There have been some complaints about the speed it takes for this smart scale to get all your readings compared to other scales, but just make sure you stand on it until you see it cycle through all the readings and then goes into sync mode. You do not have to continue standing on the scale while is sending all your information to your Fitbit app.

Power Source

This smart scale is battery operated and comes with the 3 AA batteries in the box that you will need to power it, in fact, they are already inside the scale for you and just need a plastic tab to be pulled to activate. The average length of time the batteries should last is around 1 year. Which is almost enough time to forget about changing the batteries so make sure you have some extra AA’s in a drawer in case you need them. One great thing about having a battery-operated smart scale is that it makes it easier to travel with on airplanes. With rechargeable devices, you can only stow them in carry on bags. But with anything battery operated as long as you pop the batteries out before you pack it you have the choice of packing it in carry on or checked luggage whichever you prefer.

Bottom Line

The positives of this scale include that it measures weight, body fat percentage, lean mass, and BMI. Syncs wirelessly to the Fitbit app via Wi-Fi, is compatible with Fitbit trackers, holds up to 8 unique user profiles, and has a sleep design that comes in both black and white. The negatives are that the speed it takes your readings at is comparably slower than most smart scales on the market and that the reading for the body fat percentage has the possibility to be inaccurate.

Overall if you already own a Fitbit tracker or anything else from the Fitbit universe I think that the Fitbit Aria 2 would be a fantastic addition to your wellness journey. If you don't have any other Fitbit products and don't ever plan on getting any you might want to skip this one as there are better-competing scales on the market currently.