Scales that calculate body fat are electronic bathroom scales that incorporate bioelectrical impedance analysis (BIA) technology to estimate the percentage of body weight that is comprised of fat. They typically consist of a platform with sensors that send a low-level electrical current through the body when the user stands on them. Based on how the current travels through the body, the scales can determine the proportion of body fat to lean mass.
Body fat scales are a convenient way to track body composition changes over time and monitor progress towards fitness goals. They can also be helpful for assessing the risk of developing weight-related health conditions, such as type 2 diabetes and heart disease. The development of BIA technology has revolutionized the way that body fat is measured, making it more accessible and affordable than traditional methods like underwater weighing and skin calipers.