According to an embodiment, a switch device includes a memory and one or more hardware processors coupled to the memory. The one or more hardware processors are configured to function as a selection unit and a determination unit. The selection unit, based on task schedule information synchronized with transmission schedule information where transmission timing of first data is determined for each priority of the first data, selects a first task of executing transfer processing of the first data and calculates an end time of transfer processing executed by the selected first task. The determination unit, from the end time and a current time, determines whether transfer processing of the first data is executable. The first task selected by the selection unit, when the transfer processing is executable, executes the transfer processing of the first data based on the transmission schedule information.