A bicycle component calibration device and method are provided that assist the user in determining that an adjustment was made. Basically, when a calibration command in inputted to indicate a selected adjustment amount in a selected adjustment direction, the bicycle component (e.g., a derailleur) initially moves farther than the selected adjustment amount in a first direction by an adjustment indicating amount in response to the calibration command, and then subsequently moves the bicycle component in a second direction to the selected adjustment position in which the second direction is opposite to the first direction. The adjustment indicating amount is greater than the selected adjustment amount of the calibration command. Finally, the selected adjustment position is set as an adjusted position of the bicycle component.