Is a 4x8 sheet of plywood actually 4x8?

A standard 4x8 sheet of plywood is nominally 4 feet by 8 feet, but the actual dimensions are typically slightly smaller due to manufacturing processes. Most plywood sheets measure about 48 inches by 96 inches, but the actual size may be around 47.5 inches by 95.5 inches or so, depending on the tolerance in cutting and finishing. It's always best to measure the sheet before use, especially for precise projects.