A transfer device of an embodiment includes a transporter including a temperature sensor disposed thereon and configured to move between a measurement position at which a temperature of a transfer target object is measured and a standby position separated from the measurement position, and a controller configured to control an operation of the transporter, and the controller moves the transporter between the measurement position and the standby position, and transfers the transfer target object by the transporter when the temperature measured by the temperature sensor at the measurement position continues to be equal to or less than a threshold for a first time.