Abstract: A cleaner for a belt sander comprising a mounting plate pivotally coupled to a supporting plate having a cleaning block mounted thereon. The mounting plate is adapted to be mounted to the cover of a belt sander. When the two plates are pivoted closed, the cleaning block is facing away from the abrasive belt of the belt sander so that the sander can be used for sanding. When it is desired to clean the belt, the plates are pivoted open, so that the cleaning block rests against the belt and can clean the belt as it rotates through the sander. The cleaner is especially adapted for use on portable belt sanders.