Basal Area Calculator for Forest Trees - Free DBH to Area Conversion Tool

Calculate basal area of forest trees instantly. Enter diameter at breast height (DBH) measurements to determine forest density, plan thinning operations, and estimate timber volume.

Basal Area Calculator for Forest Trees

Calculate basal area by entering diameter at breast height (DBH) for each tree in your plot. Basal area measures the cross-sectional area of tree stems at 1.3 meters (4.5 feet) above ground. Results show individual tree areas and total stand basal area in square meters.

Calculation Formula

Basal Area = (π/4) × DBH² where DBH is measured in centimeters. Result is automatically converted to square meters (divide by 10,000).

Tree Measurements

Results

Total Basal Area:

Enter valid diameter values

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