Log Board Feet Calculator

This tool scales a log under the three rules a North American mill or log buyer still uses, and shows all three answers together. Enter the small-end diameter inside the bark and the log length, optionally a count and a price per thousand board feet, and it returns Doyle, Scribner and International 1/4-inch figures with the spread between them and how much of the solid wood each rule admits to. A second action tallies a whole load written as diameter by length by count. The rules are not variants of one formula and they disagree by half the answer on a small log, which is why the rule named in a contract matters as much as the measurement. Doyle and International are exact formula rules here, while Scribner began as a diagram and its printed tables differ from the formula by a few board feet.