This page gives you the log volume calculation formula to calculate the volume of a given log of wood. Log volume is the volume of a log of cut down trees, which are measured for their volume to be sold for furniture or firewood. A typical log is shaped like a cylinder. The log (cut down trees) is shaped like a cylinder, with a rounded body of some length. Below are the International log scale, Scribner scale and Doyle log scale formulas for calculating log volume.