Calculate tree cross-sectional area and stand density.
Tree Measurements
Basal Area (Single Tree)
Basal Area (Single Tree)0.545sq ft
Total Basal Area0.55sq ft
Basal Area per Acre0.5sq ft / acre
About this calculator
Overview
Basal Area (BA) is the cross-sectional area of a tree trunk measured at breast height (4.5 feet above ground). It is a fundamental unit in forestry used to determine stocking levels, competition, and timber volume.
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Fun Facts
"Understocked (< 60 sq ft/ac)"
"Fully Stocked (60-120 sq ft/ac)"
"Overstocked (> 120 sq ft/ac)"
"Did you know? A standard forester's prism wedge calculates basal area without measuring every tree diameter directly!"
Formula: BA (sq ft) = 0.005454 × Diameter (inches)²
