This document is a lumber board foot calculator that allows the user to determine the board footage for lumber of varying lengths and widths. It displays the board footage in fractional increments for lengths between 1 and 18 feet and widths between 2 and 18 inches. To use it, the user finds the intersection of the length and width and the corresponding number is the board footage. For boards thicker than 1 inch, the user multiplies the board footage by the thickness in inches.