Process costing is a costing method used when homogeneous units are produced continuously in large quantities. It assigns costs equally over the units produced in a period. There are five steps to process costing: 1) analyze physical flows, 2) calculate equivalent units, 3) determine total costs, 4) calculate unit costs, and 5) assign costs to completed and ending work-in-process units. Process costing uses journal entries to record raw material costs, conversion costs, and transfers between departments. The weighted average and first-in, first-out (FIFO) methods are two approaches to assign costs in process costing.