An image forming apparatus includes an image forming unit in which multiple chips including multiple light emitting elements are arranged in a main scanning direction, the image forming unit forming an image on a recording medium, a reading unit that reads the image fixed on the recording medium by a fixing unit, a density specification unit that specifies a density of a region in the image for each of the chips, the region corresponding to each of the chips, a correction amount specification unit that specifies a correction amount of light quantity from the chip based on an approximate value obtained by approximating the density of a region corresponding to a chip arranged in a predetermined range from a chip for which the correction amount of the light quantity is specified, and a correction unit that corrects the light quantity in accordance with the correction amount.