Abstract: An adaptive weight device for supplementing the weight to be moved using standard exercise weight equipment. The adaptive weight device includes a weight component fabricated into a shape essentially conforming to the shape of the standard equipment to which it is removably attached. The device is removably attached to the standard weight equipment by a plurality of small magnets equally spaced on the side of the weight component that interfaces with the weight equipment. The magnets are positioned within retention seats of the weight component wherein so that they are either flush with the surface of the weight component or so that they extend slightly beyond that surface. The adaptive weight device of the present invention may be used with bar-mounted as well as stand-alone weight equipment. In either case the attachment design of the adaptive weight device ensures a balanced load when the device is added to the equipment.