How to Calculate Board Feet

Please note: measurements below are in inches and feet.


Here is the formula to figure out board feet

Thickness x Width x Length ÷ 144 = __ board feet

or

T x W x L ÷ 144 = __ board feet


To calculate board feet for many pieces:

T x W x L ÷ 144 = __ board feet x Number of Pieces = __ Total board feet


More details to consider:

  • A Board Foot is equal to 1 inch Thick x 12 inches Wide x 12 inches Long.
  • The shorthand for board feet is “BdFt”.
  • “5/4 stock” is thicker than 1 inch stock. So if you are calculating board footage for “5/4 stock” use 1.25 for the Thickness.
  • For “6/4 stock” use 1.5 for Thickness.
  • For “8/4 stock” use 2 for Thickness.
  • For “10/4 stock” use 2.5 for Thickness.

Example: To calculate the board footage of a 5/4 x 12 x 120 piece of material,

1.25 x 12 x 120 ÷ 144 = 12.5 board feet

Is metric looking a little better now?

How to Order Wood


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