Set Up Your Fitbit Aria Quick and Easy

Set up your new smart scale

The Fitbit Aria and Fitbit Aria 2 are bathroom scales that connect to your PC or smartphone to help you keep track of your weight. After the initial Fitbit Aria setup, you won't need to log in or out to switch accounts.

What Is the Fitbit Aria?

The Fitbit Aria models are Wi-Fi-enabled smart scales that can detect a user's weight, body mass index (BMI), and lean mass or body fat percentage.

Each scale displays the information on its screen before sending the data to the Fitbit servers, where it syncs with the connected Fitbit user's account. You can view this data on any of the free Fitbit apps in basic charts and visualizations.

Up to eight individuals can use the same Fitbit Aria scale. The smart device automatically detects who is using it by comparing their data to the current person standing on the scale. 

Black Fitbit Aria 2 Smart Scale

What You Need to Setup a Fitbit Aria Scale

Before you can set up your Fitbit Aria scale, you will need the following.

How to Setup a Fitbit Aria Using the Fitbit App

Using the official Fitbit app is the fastest and easiest way to set up a Fitbit Aria 2 smart scale. An iOS, Android, or Windows 10 device is highly recommended. The methods for setting up a first-generation Fitbit Aria and the Fitbit Aria 2 are almost identical. The only difference will be the additional options given to Fitbit Aria 2 owners for selecting user icons.

  1. Turn your Fitbit Aria 2 smart scale over and pull out the paper tag, which will allow the batteries to connect to the device. The Aria 2 will turn on automatically. If you own a first-generation Fitbit Aria scale, you'll also need to remove one battery from the device, wait 10 seconds, and then reinsert it to activate its setup mode.

  2. Place your Fitbit Aria on a wooden or tiled floor.

  3. Open the Fitbit app on your smartphone, tablet, or computer. If you're not logged in, you will be prompted to do so.

    You will also be offered the chance to create a Fitbit account if you don't have one. The Fitbit apps are fairly uniform across devices, so these instructions will reflect the setup process no matter which phone, tablet, or computer you're using.

  4. Make sure that your device's Bluetooth is turned on.

  5. Click on the icon that looks like a membership card (a horizontal rectangle with a circle and three lines inside). This will take you to an accounts and devices settings page.

  6. Select Set Up a Device.

  7. The next screen will show a list of Fitbit devices. Find your Aria model on the list and click on it.

    If you're unsure which model you own, check the underside of the device. A first-generation Fitbit Aria will have a bumpy underside while the Aria 2 will be smooth.

  8. You will then see a summary screen of the device. Select Set Up Your Fitbit Aria 2 (or Aria) to continue.

  9. The next screen will show links to usage and privacy policies. Feel free to read them and then choose I Agree.

  10. The app will then search for your Fitbit Aria automatically. Your Fitbit Aria scale will display a four-digit PIN code, and the app will ask you to enter it. Enter the code in the app to link this specific scale to your Fitbit account.

  11. Once the smart scale processes the PIN code, your app will begin the Wi-Fi setup so that your Aria can sync data to the Fitbit servers. Select Next to begin the process.

  12. The Fitbit app will show a list of available Wi-Fi networks. Select yours.

  13. Enter your Wi-Fi password and choose Connect.

  14. If your Fitbit Aria was able to connect to your Wi-Fi network, a tick will show on its display and your app will show you a message confirming the connection. In the app, select Next to continue.

  15. During this next stage, you will choose an icon to represent yourself when using the Fitbit Aria 2 scale. This icon will display on the Aria 2's screen after each time you weigh yourself to confirm that the data is syncing with the correct Fitbit account. Select your preferred icon and then click on Select.

    This step will not show for first-generation Fitbit Aria owners.

  16. The Fitbit app will then show you some tips for using the Aria scale. Select Next to proceed through the tips.

  17. The Fitbit app will eventually request that you perform a test weigh. Remove your shoes and socks and step on the Aria. Select Next within the app.

  18. You will then see some further Fitbit Aria tips. Select Next to progress through these screens and finish the setup process.

During your test weigh, or your first weigh session after setting up the Fitbit Aria 2, the screen may display your chosen icon, a cross, and a tick option to confirm that the correct person was on the scale before syncing the data to their Fitbit account.

If this happens, step off the scale and then use one foot to tap on the relevant side. If the cross appears on the left and the tick on the right, select the right to confirm the correct icon appeared. Select the left to let Aria 2 know that it detected the wrong account.

How to Set Up a Fitbit Aria Using a Mac or PC

If you don't have a smartphone or tablet, an optional setup method is available that uses a program that you can download from the official Fitbit website. If you own a Windows 10 PC, it's highly recommended that you download the Fitbit app and follow the steps mentioned above as that method is much more reliable.

Fitbit Aria 2 smart scale
  1. On your Mac or PC, open your preferred internet browser and go to

  2. Download the relevant program for your computer and open it.

  3. Select Get Started.

  4. Log in to your Fitbit account or create a new one by entering your email and a unique password.

    If you're creating a new account, you will be asked to enter your gender, height, and other personal information.

  5. The program will then ask you to name your Aria scale. You can call it anything you want. Enter your name for it and select Next.

  6. You will then place your scale in Setup Mode. To do so, remove the paper slip that's in the battery door of the Fitbit Aria. The Aria's display will tell you it's in Setup Mode if done correctly.

    If this doesn't work, you will need to remove at least one battery from the device, wait 10 seconds, and then place it back in.

  7. In the program, enter your Wi-Fi network's name and password. Your computer will send this information to your Aria, which will connect to Fitbit's servers to complete the setup. This can take up to two minutes to complete.

  8. If successful, a smiley face icon will show on your Aria's display, and the program on your computer will give you a completion message.

How Are Fitbit Aria and Fitbit Aria 2 Different?

Both Fitbit Aria smart scales can detect weight, BMI, and lean mass and sync to online Fitbit accounts. The Fitbit Aria 2 does feature several improvements over the original, however. Here's how the Fitbit Aria 2 is different.

  • The Fitbit Aria 2 has improved accuracy with its readings.
  • The physical design is slightly different, with a larger screen.
  • Better Wi-Fi network compatibility that allows it to detect and connect to more types of Wi-Fi signals.
  • The Fitbit Aria 2 has Bluetooth functionality, which allows it to sync to a Fitbit app that's installed on a Bluetooth enabled device such as a smartphone or tablet.
  • The weight limit on the Aria 2 has been increased to 400 lbs. The original Aria was limited to users that weighed under 350 lbs.
  • The screen on the Fitbit Aria 2 displays animated greetings and icons for each user.
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