An image forming apparatus includes a circulation unit and a controller. The circulation unit includes a plurality of reversing units each configured to reverse a sheet of recording media having one surface printed at an image processor. The circulation unit re-feeds the reversed sheet of recording media to the image processor. During duplex printing of a plurality of sheets of recording media through circulation in the circulation unit, the controller controls a holding reversing unit among the plurality of reversing units to hold at least one sheet among the plurality of sheets, so as to increase an actual circulated sheet number of the circulated plurality of sheets by a number corresponding to the at least one sheet so that the actual circulated sheet number is larger than a predetermined circulated sheet number by the number corresponding to the at least one sheet.