Abstract: A portable toilet has a bowl, a seat, and legs. The legs are telescopically extensible to allow positioning of the height of the bowl and wheels are mounted to the lower ends of the legs. The legs are spaced apart for fitting on opposite sides of a conventional building toilet and placing the bowl above the conventional toilet. The bowl has an open lower end which is enclosed by a slide door which is moved to open the lower end of the bowl and allow the contents of the bowl to spill therefrom into the conventional toilet. The contents of the bowl fall through the open lower end of the bowl and into the conventional building toilet. Preferably, pneumatic spring assist or an electric linear actuator are provided to aid in lifting and lowering the bowl after use. Water is provided for sweeping waste from within the bowl.