The most accurate measurement of body fat measuring body composition. A measure of your body composition distinguishes between fat mass and all other body mass. Dexa or dxa stands for dual emission x ray absorptiometry. Here is a video showing how a 3 d body scanner. In this study the home use body fat scales either overestimated or underestimated bfps. The most accurate readings were off by about 21 while the least accurate were off by about 34.
A dexa scan is like getting a full body. Just add the measurements to the formula and calculate. The resultant number is the of body fat. For example if your calculations equal to 20 then your body fat percentage is 20. While body fat scales and monitors are a great way to track your fat loss or gain and are generally quite accurate when it comes to weight the devices can be off by a fair percentage some by as much as 20 when it comes to calculating your body fat. Limited information is available but some 3 d scanners may be fairly accurate with errors of around 4 body fat.
Based on your buoyancy and your weight the person administering the test can calculate your body fat percentage. 86010 waist neck 100 70041 x height 100 3676. You can help improve the accuracy by following the tips above. Underwater testing is considered to be an accurate tool for measuring body fat.