A motor control device includes: a communication interface receiving from an external device a control command for defining a target rotation amount and a target rotation speed of the motor; a sensor interface connected with a first rotation angle sensor outputting a first detection signal in every rotation of the motor at a first angle or a second rotation angle sensor outputting a second detection signal in every rotation of the motor at a second angle larger than the first angle; a controller obtaining a measured value of a rotation speed of the motor based on a reception interval of the first or second detection signal, to decide a set value of the rotation speed to bring the measured value close to the target rotation speed; and a drive signal generator generating a drive signal for rotating the motor according to the set value, and outputting the drive signal.