A portable cross cut system is presented that includes a main body having a reference edge configured to be aligned against an edge of a workpiece and an engagement member configured to be laid on top of the workpiece. A first guide edge extends along an outward edge of the main body and the engagement member and is configured to guide an edge of a baseplate of a cutting tool during a cutting operation. The main body includes a blade offset member having an arm that moves between an extended position and a retracted position. When the arm is extended the outward end of the arm indicates the position of a cut line so that the user can easily align the position of the portable cross cut system to easily and accurately make cuts in a workpiece.