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How accurate is my Aria?

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The Fitbit Aria scale will measure your weight and body fat percentage. To ensure optimal accuracy in your scale's readings, consider the following tips:

  • If your Aria is picked up and moved between measurements, or stored sideways against a wall when not in use, the scale will calibrate the next time it is used for weighing. You may need to weigh yourself two consecutive times before the scale is recalibrates and displays consistent measurements.
  • Make sure that your scale is placed on a hard surface during use. Carpet, linoleum, or any other flooring with resilience may affect the accuracy of the Aria's readings.
  • Your weight and body fat percentage will naturally vary over the course of a day and depend on what you eat and drink as well as your level of exercise and perspiration.
  • The Aria provides a unique measure at each weighing, unlike scales which try to prevent fluctuation by forcing consistency over accuracy.
  • Several different methods are available to determine body fat percentage and none are 100% accurate. The Aria measures your body fat percentage using body impedance. Because body fat measurements can be subjective, the Aria's body fat reading may not match other scales or manual methods such as calipers.
  • To get a sense of what body fat percentage is healthy for you, you may want to review the standard body fat ranges for your age and gender. The following website provides this information: http://www.acefitness.org/acefit/tools-and-calculators/

If you have concerns about your scale's accuracy, please weigh yourself at least five consecutive times. By the fifth weigh-in, you should see accurate measurements consistent within one pound. If this is not the case, please do not delete any of the weights from your dashboard and contact Customer Support for further assistance.

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Last updated: August 6, 2015
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