A size-reduced input device is provided.An input device includes a base member, a motor, a rotation shaft, a worm gear, a first gear, a second gear, an elastic member, a rotor, an angle detection unit, and a controller. The motor is attached to the base member. The rotation shaft is configured to be rotated by the motor. The worm gear is configured to be unitarily rotated with the rotation shaft. The first gear is provided so as to be rotatable relative to the base member and engaged with the worm gear. The second gear is provided so as to be coaxial with the first gear and so as to be rotatable relative to the base member. The elastic member is provided between the first gear and the second gear and configured to generate urging force in a direction in which a relative angle between the first gear and the second gear from a reference angle state in a rotation direction is reduced. The rotor is provided so as to be rotatable relative to the base member, includes a third gear engaged with the second gear, and is configured to undergo rotation operation performed by an operator. The angle detection unit is configured to detect a first rotation angle of the first gear and a second rotation angle of the second gear. The controller is configured to perform drive control for the motor in accordance with a relative angle between the first rotation angle and the second rotation angle so as to change a sense of force applied to the operator via the rotor.
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