The most common sizes of plywood sold in the United States are 3/4″, 1/2″ and 1/4″. However, that’s not exactly correct. A 3/4″ sheet of plywood is really 23/32″ (and is now typically labeled as such).Click to see full answer. Hereof, what is the actual thickness of 3/4 inch plywood?What is the Actual Thickness of a Sheet of Plywood. Plywood is often sold in 1/4“, 1/2“, or 3/4” nominal thicknesses, but the actual thickness is often 1/32” thinner.Also Know, what is the actual size of plywood? The most common size for plywood sheets is 4 x 8 feet, followed by 5 x 5 feet. Also, what is the actual size of a 4×8 sheet of plywood? When you buy a sheet of plywood, you know exactly what size you’re getting, unlike with other types of lumber that have nominal and actual measurements. For example, a 4X8-foot sheet of 1/2-inch plywood measures exactly 4 by 8 feet and is exactly 1/2-inch thick.What size is half inch plywood?But I’ve found that bit manufacturers don’t always agree on the size of bit required for a particular thickness of plywood. They don’t even seem to agree on the actual thickness of plywood. For example, one bit manufacturer says ½-inch plywood is actually 31/64 inch thick, while another says it’s only 15/32 inch thick.