A convertible walker and stroller device includes a base having a plurality of wheels affixed thereto and a platform movably connected to the base via a height adjustment mechanism. A pair of openings disposed on the platform are adapted to receive a pair of legs of an occupant therethrough. The platform is configured to move between an extended position and a retracted position, wherein the platform contacts an upper side of the base when the platform is in the retracted position, and wherein a gap is defined between the base and the platform when the platform is in the extended position. The device can be selectively switched between walker and stroller configurations, providing multiple ways to transport an infant or small child in a single device.