Timber Cruise (Doyle / Scribner / International 1/4)

Board feet per log by Doyle, Scribner public-domain table, or International 1/4.

Run the calculator

Formula and source

Doyle: BF = ((D − 4)² × L) / 16. Scribner Decimal C: from public tabulated values keyed to D (in) and L (ft). International 1/4 inch: BF = 0.22 × D² − 0.71 × D (16-ft log basis).

Public log-volume tables (Doyle 1825, Scribner Decimal C, International 1/4-inch USDA Forest Service publications); USDA Forest Service Manual 2400 by name.

Audience

This tile is built for agriculture and the adjacent professions in the Agriculture and Forestry group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.

Related tools

Posture

Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.