Basal Area Calculator
Find a tree's basal area from its diameter (DBH).
Basal area is the cross-sectional area of a tree trunk at breast height — key for forestry stocking.
The math behind it
basal area (ft²) = 0.005454 × DBH² (DBH in inches).
Worked example
12 in DBH → 0.785 ft².
FAQ
Per acre?
Sum the basal areas of all trees in an acre for stand density.