Board Feet Calculator Of Logs

Board Feet Formula:

\[ BF = \frac{(D_{small} + D_{large})}{2}^2 \times \frac{L}{12} \]

Board Feet (BF):

Definition: This calculator estimates the volume of lumber in board feet that can be obtained from a log based on its dimensions.

Purpose: It helps forestry professionals, sawmill operators, and woodworkers determine the potential lumber yield from logs.

The calculator uses the formula:

\[ BF = \frac{(D_{small} + D_{large})}{2}^2 \times \frac{L}{12} \]

Where:

Explanation: The average diameter is squared and multiplied by the length (converted to feet) to estimate board feet.

Details: Accurate board feet estimation is crucial for lumber pricing, inventory management, and project planning.

Tips: Measure diameters at both ends of the log (inside bark) and the log length. All values must be > 0.

Q1: What is a board foot?
A: A board foot is a volume measurement equal to 1 foot long × 1 foot wide × 1 inch thick (144 cubic inches).

Q2: Why use both end diameters?
A: Logs taper, so using both diameters provides a more accurate average diameter for volume calculation.

Q3: How accurate is this formula?
A: This is an approximation. Actual yield depends on sawing method, log defects, and milling efficiency.

Q4: What about metric measurements?
A: Convert all measurements to inches and feet before using this calculator.

Q5: Does this account for bark or saw kerf?
A: No, this is a theoretical maximum. Deduct 10-20% for practical yield estimates.