Best smart scales 2023: Track body composition from home

A smart scale is a digital device that can measure a person’s weight and body composition to give an insight into their health and fitness. The best smart scales use bioelectrical impedance analysis (BIA), a weak electric current, that sends a painless charge through the feet to estimate a range of body metrics, including body mass index (BMI), muscle mass, protein, body fat percentage and bone density.

After measuring weight, a smart scale uses WiFi or Bluetooth (sometimes both) to send the data to your phone, where the information is stored and updated every time you step on the scales. Depending on the brand, some smart scales also measure heart rate.

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