A toddler chair convertible to a standing platform including a foldable support frame with front and rear legs configured to stably support a standing platform and an elevated seat assembly for a toddler. The seat assembly includes a seating portion, a backrest portion, and a moveable elevating frame. The seating assembly is vertically moveable in relation to the support frame. The seating and backrest portions are moveable in relation to each other. A linkage interconnecting the seating portion and the support frame controls movement of the seating portion as the seat assembly is moved in relation to the support frame. In one configuration the seating assembly disposed generally above the platform and is operable as a seat for a child. In a second configuration, the seating portion is repositioned into general alignment with the backrest portion to allow a child to stand on the platform below.