an apparatus , device , and method for measuring and displaying the amount of calories expended by a person engaged in weight lifting . the apparatus senses the displacement of a weight through the use of a sensor and a computer translates that displacement into caloric expenditure . a display provides the user with a visual report of the amount of caloric expenditure as well as other fitness parameters of the workout . the cumulative amount of calories expended over a length of time may also be provided to the user . the user can control the information displayed and the operations performed through the user interface . the apparatus and device may allow for more than one user at a time . audible signals may be generated to inform the user about different fitness parameters .