An image forming apparatus includes an image bearing member, a charging member, an image forming portion, a notifying member, a cleaning member, a detecting member, an acquiring portion, and a controller. The charging member is disposed to be in contact with the image bearing member, and charges the image bearing member. The image forming portion forms a developer image. The notifying member notifies of information relevant to a lifetime of the charging member. The cleaning member is in contact with the image bearing member, and removes the developer on the image bearing member. The detecting member detects driving torque of the image bearing member. The acquiring portion acquires specification information relevant to a specification of the cleaning member. The controller controls the notifying member to notify of the lifetime of the charging member based on the specification information acquired by the acquiring portion and information corresponding to the driving torque of the image bearing member detected by the detecting member and the number of image formed sheets.