Spike's Calculators
Logging
Brereton Log Rule Calculator
The Brereton log rule calculates the volume of a log in board feet.
This logrule does not take into account any deductions needed for saw kerf, slabs, or edgings. It gives the volume of a log in terms of board feet, calculated at one cubic foot = 12 board feet.
Two diameter measurements shall be taken under the bark at both log ends, perpendicular to each other. The final recorded diameter shall be the average of the two measurements.
Lengths shall be measured along a straight line parallel to the log's central axis and recorded to the nearest lower full odd or even inch.
Calculator
- enter the length of the log in feet
- enter the average diameter of the log in inches
Result
- the estimated amount of board feet
Formula used
BF = 0.06545 * D² * Lwhere
D = the average diameter taken from both ends in inches
L = the length of the log in feet
Board Foot Log Rule Calculators
- Brereton Log Rule - Imperial Measurements
- Blodgett Foot Rule
- Doyle Log Rule
- Early Log Rule
- International 1/8-inch Log Rule
- International 1/4-inch Log Rule
- International 1/4-inch Log Rule (Grosenbaugh)
- International 1/8-inch and 1/4-inch Log Rules
- Roy Log Rule
- Ontario Log Rule
- Scribner Log Rule
- Scribner Log Rule: Board Foot Volume of a Tree
- Scribner Decimal C
- Comparing Results from Various Board Feet Log Rules