How to Calculate Board Feet for Lumber Orders
Lumber is priced by the board foot - a unit that confuses everyone the first time they encounter it. One board foot equals 144 cubic inches of wood, or equivalently a piece 1 inch thick by 12 inches wide by 12 inches long. The catch is that nominal lumber dimensions (like a 2×4) don't match actual dimensions, and whether you use nominal or actual measurements changes your total. Get this wrong on a large framing order and your material costs are off before the first board is cut.