Abstract: A modular item of child's furniture can be converted from a high chair to a child's chair by removing four chair leg extensions. A lumbar support is provided for the child occupying the chair that is shaped to match the average physiological needs of an infant from birth to two years of age. An adjustable safety strap that is drawn over the child's shoulders restrains dangerous side-to-side swaying motion. A tray also is provided that can be installed on the chair or removed from the chair through a single adult hand manipulation as well as being assembled into a table by attaching the chair leg extensions to the tray.An arcuate rung also can be attached to the chair legs in order to convert the chair into a rocking chair.