<p><b>OBJECTIVE:</b> To compare different equations to estimate body weight and height in older adults and determine which ones provide the most reliable estimates. <br> <b>METHODS:</b> This descriptive, cross-sectional study was conducted at a health clinic in Lagarto, Sergipe, Brazil. The sample consisted of older men and women who were able to walk. We measured body weight, body height, knee height, calf cir...