Timber Volume / Board Foot Calculator
Calculate the usable timber yield (board feet and cubic volume) from logs using Doyle, Scribner, or International 1/4-inch forestry log rules.
Input Parameters
Enter details for calculation.
Timber Yield (Board Feet)
Cubic Volume Estimate
Expert Tip
Doyle rule underestimates small logs but is accurate for large diameters. International 1/4-inch rule provides the most accurate estimation of sawmill yield.
Calculation Methodology & Details
Formula
Calculations utilize top diameter inside bark (D in inches) and log length (L in feet). Board foot is a wood volume metric (12" x 12" x 1"). Metric inputs are converted to inches and feet for processing.
Important Disclaimer
The calculations provided are for educational and general planning guidelines only. They do not replace professional forestry or anatomical analysis or certified advice.
How Timber Volume is Solved
Log scales are solved using standardized forestry rules:
Choose Rule & Units
Select Doyle, Scribner, or International 1/4" and set measurement systems.
Input Log Profile
Enter log top diameter inside bark (excluding bark) and absolute log length.
Determine Volume
Read total board feet (BF) and estimated metric or imperial cubic volume.