Enter the length of the tree (in) and the tree diameter inside bark (in) into the Calculator. The calculator will evaluate the Lumber Yield. 

Lumber Yield Formula

LY = [L*(D-4)*(D-4)]/16

Variables:

  • LY is the Lumber Yield (in^3)
  • L is the length of the tree (in)
  • D is the tree diameter inside bark (in)

How to Calculate Lumber Yield?

The following steps outline how to calculate the Lumber Yield.

  1. First, determine the length of the tree (in). 
  2. Next, determine the tree diameter inside bark (in). 
  3. Next, gather the formula from above = LY = [L*(D-4)*(D-4)]/16.
  4. Finally, calculate the Lumber Yield.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

length of the tree (in) = 16

tree diameter inside bark (in) = 6