A correction amount calculation device includes a first acquisition section and a correction amount calculation section. The first acquisition section is configured to acquire a first positional deviation amount, which is a positional deviation amount of a printing position detected by a printing inspection machine with respect to a pad position, and a second positional deviation amount, which is a positional deviation amount of a mounting position detected by a appearance inspection machine with respect to the pad position. The correction amount calculation section is configured to, based on the first positional deviation amount and the second positional deviation amount, calculate a correction amount, which is used in the mounting process of a board product to be produced later, regarding a third positional deviation amount, which is a positional deviation amount of the mounting position with respect to the printing position.