Basal Area Calculator

Enter the total diameter of a tree at 4.5 feet off the ground into the calculator to determine the basal area.

Basal Area Formula

The following formula is used to calculate the basal area of a tree.

BA = F * DBH^2 * N

  • Where BA is the basal area
  • F is the foresters constant (.005454)
  • DBH is the average diameter of the tree at “breast height” which is 4.5 feet (in)
  • N is the number of tress per acre.

FAQ

What is basal area?

A basal area is defined as the total area of an acre occupied by the tree stems.

What is a foresters constant?

The foresters constant described above is used to convert inches to square feet.


Basal Area Example

How to calculate basal area?

  1. First, determine the average diameter of the trees at “breast height”.

    For this example we will say we measure 10 trees, and on average they have a diameter of 10 inches at breast height (4.5 feet).

  2. Next, measure the number of trees per acre.

    After counting, we find the number of trees per acre to be 250.

  3. Finally, calculate the basal area.

    Using the formula above, we find the basal area to be .005454*10^2*250 = 136.35 square feet per acre.


basal area calculator
basal area formula

Related Terms

basal area calculator
basal area formula
how to calculate basal area
basal area
basal area of tree
basal area definition
basal area factor
basal region
area basal formula
formula area basal
how to measure basal area
stand basal area
basal tree
basal area per acre
basal area prism
basal area forestry
basal area equation
how to find basal area
tree basal area calculator
total basal area
basal area per hectare
basal area factor prism
how to calculate basal area from dbh
how to calculate basal area of a tree
basal area example
how to calculate basal area of tree
basal area from dbh
how to calculate basal area per acre
calculate basal area from dbh
forestry basal area
how to calculate basal area per hectare