International 1/4-inch Log Rule Board Foot Calculator

Calculate Volume





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Formula

The formula used to calculate the volume is:

\[ \text{Volume} = 0.04976191 \times L \times D^2 + 0.006220239 \times L^2 \times D - 0.1854762 \times L \times D + 0.0002591767 \times L^3 - 0.01159226 \times L^2 + 0.04222222 \times L \]

Definition

This calculator uses the International 1/4-inch Log Rule to estimate the volume of a log based on its diameter and length.

Steps to calculate the volume:

  1. Measure the diameter on the small end of the log in inches.
  2. Enter the length of the log in feet.
  3. The formula calculates the volume in board feet, cubic feet, and cubic meters.

Example Calculation

Let's assume the following values:

Using the formula:

\[ \text{Volume} = 0.04976191 \times 16 \times 20^2 + 0.006220239 \times 16^2 \times 20 - 0.1854762 \times 16 \times 20 + 0.0002591767 \times 16^3 - 0.01159226 \times 16^2 + 0.04222222 \times 16 = 32.0 \]

Conversion Chart

Diameter (inches) Length (feet) Volume
6 16 19.2
8 16 38.7
10 16 64.6
12 16 96.9
14 16 135.6
16 16 180.6
18 16 232.0
20 16 289.7
22 16 353.9
24 16 424.4
26 16 501.2
28 16 584.5
30 16 674.1
32 16 770.1
34 16 872.4
36 16 981.1