An image forming apparatus includes an image forming unit, a stacking unit, a first detection unit, a second detection unit, and a control unit. The image forming unit forms an image on a recording medium. The stacking unit stacks recording media on which images are formed. The first detection unit detects a conveyance interval between a trailing edge of a first recording medium and a leading edge of a second recording medium conveyed subsequent to the first recording medium conveyance. The second detection unit is disposed downstream of the first detection unit and detects the conveyance interval and detects whether an amount of recording media stacked on the stacking unit exceeds a predetermined amount. The control unit changes, according to a result of comparing detected conveyance intervals, conveyance timing of the second recording medium to widen the conveyance interval detected by the first detection unit.