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For step-by-step instructions, see help.fitbit.com.
Reassigning a measurement
If two users on the same scale are close in weight or body composition, your Aria 2
will prompt you to select the correct user noted by their personalized icon. If an
incorrect user is chosen, or if a weight is improperly attributed, you can reassign it to
the correct user in the Fitbit app or on the fitbit.com website.
For step-by-step instructions, see help.fitbit.com.
If your scale consistently recognizes you as a guest, see help.fitbit.com.
Choosing Regular or Lean modes
“Lean” mode is intended for professional or very high-level athletes like marathon
runners or body builders. Individuals with exceptionally low body fat relative to their
muscle mass may want to consider lean mode to improve the scale’s accuracy;
however, many very fit and active people still get more accurate readings in
“Regular” mode, which is appropriate for most users.
For step-by-step instructions, help.fitbit.com.
Ensuring accuracy
Use these tips to get the most accurate and consistent readings from your scale:
● Use your Aria 2 while barefoot. The scale cannot measure body fat percentage
if you’re wearing shoes or socks.
● Make sure your feet are dry before weighing yourself.
● Place your Aria 2 on a hard, flat surface during use. Using the scale on a soft
surface - like carpet or linoleum - may affect the accuracy of the Aria 2's
readings.
● Balance your weight evenly between both feet while standing on the scale.
● Weigh yourself at the same time each day to see consistent trends. Your
weight and body fat percentage will naturally vary over the course of the day.
● If your Aria 2 is picked up and moved between measurements, or stored
sideways against a wall when not in use, the scale will go through a calibration
process the next time it is used for weighing. Up to two consecutive weigh-ins
will then be required before your scale is recalibrated and again displays
consistently accurate measurements.
NOTE: Body fat percentage, BMI, and lean mass measurements require that your Aria
2 scale has been set up with your Fitbit account. You do not need to
complete this setup to weigh yourself.