A multi-functional hand strength assessment device includes a housing and at least one bellows device supported by the housing. A grip bar is interfaced with the bellows device for compression thereof. The grip bar is supported by the housing and is accessible by a user to grasp the grip bar for assessment of grip hand strength and finger pinch strength of the user. A grip is interfaced with the bellows device for compression thereof for assessment of twisting hand strength of the user. A pinch bar is supported by the housing opposite the grip bar and movement of one of the grip bar and the pinch bar towards the other compresses the bellows device for assessment of finger pinch strength of the users fingers. A mechanical or electronic pressure gauge is in fluid connection with the bellows device to register a reading relating to hand strength.