A standard sheet of plywood is 4' x 8' and will cover 32 square feet. The 4' x 8' size correlates to the spacing on floor joists, roof trusses, or wall studs for easy installation. The next common size down is 5' x 5' and will cover 25 square feet.

The most common plywood sheet size is 4 feet by 8 feet (48 inches by 96 inches), which is standard for many construction and woodworking applications. This size is convenient because it covers large areas efficiently and fits well into standard framing dimensions for walls, floors, and roofs.

A standard sheet is 4 by 8 feet and can be found in a series of thicknesses, with specialized sizes likewise offered for crafting projects or large construction jobs. Plywood is made of thin sheets of softwood glued together in layers, with the wood grain of each layer perpendicular to the next.

The standard sheet of plywood measures 4 x 8 feet. However, it comes in a variety of different thicknesses. To complicate things a bit further, there are specialty sizes available as well. If building in the United States, the length and width of plywood is measured in standard units.

However, a standard sheet of plywood is often sold at 4 x 8 feet and 5 x 5 feet. These sizes also include different thicknesses that range from thin sheets sized ½ inch thick to non-standard thickness standards of ⅛ inch to ¾ inch.