Board feet, linear feet, square feet—it’s easy to get lost in the lumber lingo. This guide breaks down the key differences between board feet (a measure of volume) and linear feet (a measure of length), showing you when to use each, how to calculate them, and why it matters for accurate pricing and project planning. Whether you’re buying trim, ordering live edge slabs, or stocking hardwood in bulk, understanding these units will save you time, money, and headaches.