Abstract: The invention provides a portable folding saw guide for hand held circular saws that allow the user to make different cross angled cuts to a work piece positioned thereon. The guide uses an adjustable guide track in which the saw is engaged which can be sequentially positioned at different cross angle incremental orientation by the user in a self-contained portable platform structure. The saw guide has hinges that allow the bottom surface of one of the work surface portions to be folded up against the bottom surface of the other work surface portion so that the saw guide can be folded, transported to a use location, unfolded and used. The saw guide plate supports and engages the saw on one side of the saw only.