An input apparatus is provided, and includes: a main body operated by a user in a first operation form of pointing a predetermined position on a screen using a pointer on the screen and a second operation form different from the first operation form. The input apparatus includes an operation form detection section to detect which of the first operation form and the second operation form an operation form of the main body is; a movement detection section to detect a movement of the mail body. The input apparatus includes an operational section to switch a first operational mode corresponding to the first operation form and a second operational mode corresponding to the second operation form therebetween according to the operation form of the main body, and calculating a corresponding movement value corresponding to the movement of the pointer on the screen that corresponds to the detected movement of the main body.