1. What is Board Feet Calculation?

Definition: Board feet is a measurement of lumber volume, where 1 board foot equals 1 foot long × 1 foot wide × 1 inch thick.

Purpose: This calculator helps estimate the amount of usable lumber in a log before processing.

2. How Does the Calculator Work?

The calculator uses the Doyle Log Rule formula:

Where:

• \( BF \) — Board feet
• \( D \) — Diameter of log (inches, inside bark at small end)
• \( L \) — Length of log (feet)

Explanation: The formula squares the diameter, multiplies by length, then divides by 16 to estimate board feet.

3. Importance of Board Feet Calculation

Details: Accurate board feet estimation helps in logging operations, sawmill planning, and lumber pricing.

4. Using the Calculator

Tips: Measure log diameter at the small end (inside bark) in inches and length in feet. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use the Doyle Log Rule?
A: It's commonly used in eastern U.S. for hardwood logs and provides a conservative estimate.

Q2: Are there other log rules?
A: Yes, Scribner and International rules are alternatives that give different estimates.

Q3: How accurate is this calculation?
A: It's an estimate - actual yield depends on sawing method, log taper, and defects.

Q4: Should I measure diameter inside or outside bark?
A: Measure inside bark at the small end for most accurate results.

Q5: Does this account for saw kerf (waste)?
A: The Doyle rule inherently accounts for some waste in its formula.