Definition: A table tennis table is a rectangular table, 9 feet long (2.74m) and 5 feet wide (1.525m), and with a flat upper playing surface 29.92 inches (76cm) above the floor.
The best table tennis tables have a playing surface of 1 inch (25mm) (or thicker material, although 0.75 inches (19mm) is acceptable for non-elite play.