An image forming apparatus includes: a storage container which horizontally stores a waste toner; a full detection sensor which detects whether the waste toner reaches a full position; a near detection sensor which detects whether the waste toner reaches a near position; and a conveyance portion which is provided inside the storage container, includes an axial rod, and rotates about the axial rod, wherein the conveyance portion includes: a first spiral protrusion which conveys the waste toner to the near position; a second spiral protrusion which conveys the waste toner from the near position to the full position; and a third range which is provided between the first spiral protrusion and the second spiral protrusion and through which the waste toner passes at a speed lower than the conveyance speed of the first spiral protrusion and the second spiral protrusion.