Doyle Log Rule - Multi-Log Calculator
The Doyle Log Rule Multi-Log Calculator lets you estimate total board feet from multiple logs using the traditional Doyle scaling rule. This tool is designed for mobile and desktop use and supports copying history, live total updates, and CSV export.
How to Use:
Click Add Log to enter multiple logs. Input the length and diameter of each log. Click Calculate to view board feet per log and total. Use Copy History or Download CSV to save your results.
- Lumber Volume Calculator: Compute board feet and convert to cubic feet and cubic metres using the Board Foot Lumber Calculator.
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- Wood Weight Utility: Quickly determine wood weight from cubic-foot volume using the Weight of Wood from Cubic Feet Calculator.
Doyle Log Rule - Multi-Log Calculator
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Total Board Feet: 0
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Calculation History |
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Calculator
- Length (ft): enter the log length in feet
- DIB (in): small-end diameter inside bark in inches (must be > 4")
Results
- Board Feet: Calculated per log using the Doyle Rule
- History: Each entry is shown in a live text for copy or download
- Total Board Feet: Automatically summed and displayed
Doyle Log Rule Formula
\[ \text{Board Feet} = \frac{(D - 4)^2 \cdot L}{16} \]
Example Calculation
Given:
- \( D = 12 \, \text{in} \)
- \( L = 16 \, \text{ft} \)
\[ \begin{align*} \text{Board Feet} &= \frac{(12 - 4)^2 \cdot 16}{16} \\ &= \frac{8^2 \cdot 16}{16} \\ &= \frac{64 \cdot 16}{16} \\ &= 64 \end{align*} \]
Board Foot Log Rule Calculators
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- Blodgett Foot Rule
- Doyle Log Rule
- Doyle Log Rule - Multi-Log
- Early Log Rule
- International 1/8-inch Log Rule
- International 1/4-inch Log Rule (Clark Version)
- International 1/4-Inch Log Rule (Clark Version) - Multi-Log
- 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 Decimal Rule - Multi-Log
- Scribner Log Rule: Board Foot Volume of a Tree
- Scribner Decimal C
- Comparing Results from Various Board Feet Log Rules