Fitbit Aria 2 & Fitbit Aria Air

Smart Scales

Weight + More

Tracks more than weight by showing your BMI in the Fitbit app. Aria 2 users can also see body fat percentage and lean mass in the app.

Charts and Graphs

See your trends and track progress in easy-to-read charts and graphs on the Fitbit dashboard.

Multiple Users

Aria 2 automatically recognises and syncs stats for up to 8 users while keeping them private and Aria Air syncs individual stats to the Fitbit app when your phone is connected to the scale.

Easy Smartphone Set-up

Set up your scale in minutes. Use your smartphone's Bluetooth technology and a Wi-Fi network to get started with Aria 2 or just a Bluetooth connection to start using Aria Air.

Wireless Syncing

Aria 2 syncs stats wirelessly to computers and 200+ leading iOS, Android and Windows devices via your home Wi-FI network. Aria Air syncs stats wirelessly to computers and 200+ leading iOS and Android devices via a Bluetooth connection only.

Works With Fitbit App

See your progress over time and get the motivation to keep pushing towards your goals.

Tracker Compatible

Connects to the Fitbit app where it works alongside Fitbit watches and trackers to give you a better understanding of how your activity impacts your weight.

Sleek Design

Built with a polished glass surface, this scale makes a stylish addition to any home. Polished glass surface only on Aria 2.

Aria 2


31.2 cm


33.4 mm

31.2 cm

Weight: 2.13 kg

Aria Air


29.97 cm


2.54 cm

29.97 cm

Weight: 1.77kg

What's Included

Aria 2

  • Aria 2 Wi-Fi Smart scale
  • 3 AA batteries

Aria Air

  • Aria Air Bluetooth Smart Scale
  • 3 AAA batteries


Aria 2

  • 1.94kg
  • 31.24cm x 3.3cm x 31.24cm

Aria Air

  • 1.77kg
  • 29.97cm x 2.54cm x 29.97cm

Sensors and Components

Both scales

  • Weight and BMI: Four load cells measure weight. BMI is calculated and displayed based on weight and height.

Aria 2 only

  • Body composition: The scales measure body mass using bioimpedance analysis.


  • Backlit LCD display
  • Aria 2 displays weight, body fat percentage, BMI and user selection
  • Aria Air displays weight
  • Units in pounds, kilograms or stones

Battery and Power

  • Aria 2 uses 3 AA batteries – no power cable necessary.
  • Battery type: 3 standard 1.5V size AA batteries (included)
  • Aria Air uses 3 AAA batteries—no power cord necessary.
  • Battery type for Aria Air: 3 standard 1.5V size AAA batteries (included)


  • Aria 2 automatically recognises up to eight different people.
  • Aria Air supports multiple users.
  • Your weight data from either scale syncs to your private Fitbit dashboard, so you can control what data you share.
  • Measurement range: 5-180 kg


Do not use if you have a pacemaker, other internal medical device or are pregnant. Not intended for use by children under 13. Always consult your doctor. Slippery when wet.


  • Tempered glass platform
  • ABS bottom housing

Environmental Requirements

  • You will get the most reliable readings on a hard surface (not carpet).
  • Operating temperature: 5° to 40° C
  • Relative humidity: 15-93%

Aria 2 Syncing

Aria 2 syncs automatically and wirelessly and supports Wi-Fi encryption. Network requirements:

  • Wireless 802.11b/g/n 2.4 GHz
  • WEP/WPA Personal/WPA2 personal security supported
  • Automatic (DHCP) IP set-up (static IP configuration not supported)
  • To set up for the first time, you’ll need one of the following: iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices

Aria 2 Sync Encryption

  • TLS 1.2, using AES-128, NIST P-256 ECC and SHA-256, with revocation

Aria Air Data Transfer

  • Aria Air syncs with your mobile device via Bluetooth 4.0
  • To set up for the first time, you’ll need one of the following: iPhone 4S or later, iPad 3 gen. or later, or leading Android or Windows devices

Aria Air Data Encryption

  • AES-128

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