Combination weighing device with selectable weighing hoppers

A combination weighing device includes: a conveyance unit; a plurality of first hoppers each receiving the article; a plurality of second hoppers detachably provided on a downstream side of the plurality of first hoppers, and each receiving the article; a weighing unit weighing the article held in each of the plurality of second hoppers; and a control unit performing combination calculation and discharging the article from the second hopper corresponding to the combination. The control unit performs combination calculation based on a weighing value corresponding to mass of the article held in each of the plurality of second hopper, and continues combination calculation based on a weighing value corresponding to mass of the article held in each of the second hoppers other than a part of the second hoppers in a state in which the part of the plurality of second hoppers has been removed.