Fitbit Aria vs Aria 2 – Smart Scale Comparison

Fitbit Aria vs Aria 2

Fitbit recently announced the Aria 2, a Wi-Fi + Bluetooth scale that measures weight and body fat percentage. If you don’t own a Fitbit smart scale yet, you might want to know which one to buy. If you already own the original Aria, you might wonder if there is any reason to upgrade. Let’s compare the Fitbit Aria vs Aria 2 and answer those questions for you.

See also: Fitbit Aria 2 Review

Style and Display

The style of the scale has not changed hardly at all and it is the same exact size and weight. The Aria 2 does have a higher resolution display, but this upgrade is not that significant. Since the display doesn’t improve how useful the scale is, there is no clear winner here.

Winner: Tie

Ease of Setup

The biggest difference between the Aria 2 and the original Aria is the setup process. The Aria 2 can be setup via bluetooth and your smartphone, while the original Aria uses Wi-Fi. Since the Wi-Fi process can actually be quite a pain (speaking from personal experience), the Aria 2 is the clear winner here.

Winner: Fitbit Aria 2


The Fitbit Aria 2 claims to be the “most accurate Wi-Fi smart scale.” This refers to weight measurements only, however, and not body fat percentage.

My Aria 2 weighs me about a pound lighter than the original Aria, however, changes in my weight over time are very similar.

I also created two videos that test different aspects of the Fitbit Aria 2 accuracy:

Winner: Fitbit Aria 2

Should You Upgrade?

Since your scale is already set up and the improved accuracy is not related to changes in your weight over time, as long as you have no issues with your original Aria scale, there is really no reason to upgrade at this time.

Which to Buy?

If price is an issue and you can find the older Fitbit Aria for a good price–and you’re willing to deal with the one-time potential hassle of setting it up via Wi-Fi–then the Fitbit Aria is likely the better choice for you.

If you want the easiest initial setup and the claimed best-in-class accuracy, then the Fitbit Aria 2 if likely the better choice for you.

Amazon Prices at a Glance

To help you compare current Amazon prices in a single glance, I created a list of all the official Fitbit Aria and Aria 2 options available on Amazon along with their current prices and review ratings. The information comes directly from Amazon, so you can be sure that the prices are always up-to-date.

Most of the Fitbit Aria and Aria 2 options on Amazon are Prime eligible, so you can also benefit by trying an Amazon Prime 30-Day Free Trial and receive unlimited free two-day shipping with no minimum order size. Alternatively, if you have a .edu email address, you can get a Prime Student 6-month Free Trial with the same benefits.

If you find this list useful, please let me know in the comments below, or — even better — you can support this website by using these links to make your Amazon purchase (if you buy something, I may receive a small commission at no extra cost to you. As the only person running this website, the support is greatly appreciated).

[aawp box="B0077L8YFI, B0077L8YOO, B07527BY99, B0752M6T6K" template="amazon-nsa-list"]

Fitbit Aria vs Aria 2 — Summary

The Fitbit Aria 2 is not a huge upgrade over the original Fitbit Aria. There are no added features like being able to track water percentage and muscle mass that some other smart scales have, however the Aria 2 can now support weights up to 400 lbs, whereas the original Aria can only support up to 350 lbs.

The main difference is being able to setup the scale via bluetooth and your smartphone, which was much easier in my personal experience, but it is a one-time only initial setup process (unless you frequently change Wi-Fi in your house).

The Fitbit Aria 2 is claimed to have the best-in-class weight accuracy and my Aria 2 does weigh me about a pound less than my original Aria, however, the changes in my weight over time are still very similar between the two scales.

There’s likely no reason to upgrade if you currently own and use the original Fitbit Aria, but if you’re trying to decide which to buy and you can afford the Aria 2, I’d recommend just buying the newest hardware as it will likely be easier to set up.