A table saw includes a base having one or more tracks secured on top. A seat is secured on one end of the tracks. A plate is slidably engaged on the tracks and detachably secured to the tracks. A saw device is secured to the bottom of the plate and includes a saw blade extended upward beyond the plate. A bar is secured on the seat, and a guide is selectively secured on the seat and the plate for guiding the work pieces to move across the saw blade. A board is slidably engaged on the seat and the plate for moving the work piece across the saw blade.