DBH ↔ Basal Area Converter

Basal area is the cross-sectional area of stem at 'breast height', usually 1.3m (or 4.3ft).

It can be calculated in cm2 as BA = π x (DBH/2)2.

To output basal area in m2, which is conventional, the formula can be simplified as: BA = 0.00007854 x DBH2