The invention provides a motor control device configured to feedback-control state quantity of a motor or a load, the device including a first notch filter disposed inside a feedback control system and configured to change a frequency component to be removed, a first notch controller configured to change a first notch frequency as a center frequency of the first notch filter, and a change forecaster configured to calculate to output, in accordance with the first notch frequency at each of a plurality of past times, at least one of a forecast value of the notch frequency at a specific future time, a forecast value of elapsed time from current time until the notch frequency is to become out of a specific frequency range, and a forecast value of time when the notch frequency is to become out of the specific frequency range.