Black Walnut Tree Value Calculator
Estimate the standing timber value of your Black Walnut trees
Estimation Results
*Disclaimer: This is a rough estimate based on the Doyle Log Rule. Actual market prices vary by location, accessibility, and current demand.
How is Black Walnut Tree Value Determined?
Black Walnut (Juglans nigra) is one of the most highly sought-after hardwoods in North America. Unlike common timber, individual walnut trees can have significant value, especially if they qualify as "veneer grade." This calculator helps you estimate the potential worth of a standing tree using the industry-standard Doyle Log Rule.
1. Measuring Diameter (DBH)
The most critical measurement is the Diameter at Breast Height (DBH). This is the thickness of the tree measured 4.5 feet above the ground. For timber purposes, a tree isn't typically marketable until it reaches at least 14-16 inches DBH. Prime value starts appearing once the tree exceeds 20-22 inches.
2. Merchantable Log Height
This is the length of the trunk that is usable for lumber. Usually, this is the distance from the stump to the first major branch or significant defect. In forestry, this is often measured in 16-foot "logs" or 8-foot "half-logs."
3. The Doyle Log Rule Formula
Our calculator uses the Doyle Rule, which is the most common standard used by timber buyers in the Eastern United States. The formula is:
Board Feet = [(Diameter – 4)² × Length] / 16
4. Understanding Quality Grades
- Veneer Grade: Large diameter (22″+), perfectly straight, no knots, and no hardware (nails/fencing) inside. These are used for high-end furniture and car interiors.
- Select Lumber: High-quality logs with minimal defects. Used for solid wood furniture and flooring.
- Common Grade: Smaller logs or those with frequent knots and branches.
Market Factors Impacting Price
It is important to note that "Yard Trees" (trees in a residential yard) are often worth significantly less than "Woods Trees." This is because yard trees frequently contain hidden metal (nails, clothesline hooks, wire) that can destroy expensive sawmill blades. Many loggers will refuse yard trees unless they are exceptionally large and clear.
Example Calculation: A Black Walnut tree with a 24-inch diameter and 16 feet of clear trunk contains roughly 400 board feet. At a veneer price of $8.00 per board foot, that single tree could be worth $3,200.