According to an aspect, a character input device includes a touch panel, a vibrating unit, and a control unit. The touch panel displays a plurality of buttons each of which corresponds to a character, and detects a contact operation. The vibrating unit vibrates the touch panel. When the contact operation by a contact is detected by the touch panel while the contact on the touch panel is continued since a start of the contact at a first position on the touch panel on which the plurality of buttons are displayed, the control unit receives a character corresponding to a button, as an input, displayed at the position where the contact operation is detected. The control unit causes the vibrating unit to change a vibration behavior of the touch panel when the contact operation is detected.