🌳 Tree Value Calculator
Enter your tree’s trunk diameter and condition ratings to estimate its appraised value using the standard trunk formula method.
What this calculator does
The Tree Value Calculator estimates a landscape tree’s monetary worth using the trunk formula method, a technique commonly referenced by arborists and tree appraisers for large, healthy shade and ornamental trees.
How the formula works
The calculator first finds the trunk’s cross-sectional area using Area = π × (diameter ÷ 2)², then multiplies it by a base replacement cost per square inch to get an unadjusted base value. That base value is then scaled down by three percentage ratings — species desirability, condition (health and structure), and location (placement and contribution to the landscape) — multiplied together: value = base value × species% × condition% × location%.
- A larger trunk diameter increases value quickly since area scales with the radius squared
- Species, condition, and location ratings are typically assigned by a certified arborist during a physical inspection
A note on accuracy
This is a simplified educational version of the trunk formula method used in professional tree appraisal guides; a formal, insurance-grade, or legal tree appraisal should be performed by a certified arborist following an established appraisal standard.