Log volume and log rules
Choose a geometric volume formula or a board-foot log rule. These measure different things; use the method agreed with your supplier.
Saved only in this browser. Inputs stay in this tab’s session storage and are not transferred to the app.
Example calculation
Log volume and log rules: worked out from the values already filled in the form above.
Inputs
- Measurements in: Millimetres
- Method: Huber · m³
- Length: 3,000
- Diameter: 250
Result
- Amount: 0.147 m³
How the calculation works
Huber estimates solid log volume from the midpoint diameter and length. Smalian averages the cross-sectional areas at the two ends, then multiplies by length. Use the diameter location required by your chosen method.
Doyle and International ¼-inch are board-foot log rules. Their result estimates sawn yield, not the log’s geometric cubic volume. The tool keeps these result types separate and does not convert a log-rule yield estimate into physical cubic metres.
Related tools
Boards from a target volume
Work out the whole number of identical boards needed to reach a target volume.
02Board foot calculator
Enter actual board dimensions to total the volume, waste allowance and optional cost.
03Cubic feet of lumber
Calculate CFT from actual dimensions, with the same inputs available in metric or inches.