The size of a pool table can vary, but the most common standard size for a home pool table is an 8-foot table, followed by a 9-foot table. A regulation size pool table is 9 feet long and 4.5 feet wide, with a playing surface of 100 inches x 50 inches. Bar box pool tables, which are commonly found in bars and pool halls, are typically 7 feet long with a playing surface of 78 inches x 39 inches. The ideal room size for an 8-foot table is 132" x 1610", while the ideal room size for a 7-foot table is 129" x 16. It is important to have adequate room around all sides of the table for players to shoot, and to consider the size of cues you plan to use.