An apparatus, system, and method for measuring height of one or more objects/users. Once the height-measuring device is calibrated, a retracting foot platform is positioned atop a user/object and its distance is captured, stored, and calculated by a laser sensor to determine the resulting heights of the objects/users. The height measurements may be displayed on a screen, including the screen display of the height-measuring device itself, or other devices such as a tablet, smartphone, or scale.The height data from each user/object may be compared to one another. The height measuring device also includes a predictive algorithm that determines the future height of one or more user.