ContractorHandbook

How Many Board Feet in a 2x6x8?

Total board feet

8 bf

One nominal 2x6, eight feet long.

thick, inwide, inlength, ftthickness x width x length / 12 = board feet
A board foot is a volume, not a length, and hardwood is priced in it. Thickness and width in inches, length in feet, divided by twelve, which is why a wide board costs more per foot of run than a narrow one of the same species.

How that number is worked out

These are the figures this page was built with and every line the calculator produces from them. Change anything above and all of it moves.

  • Thickness, nominal2 in
  • Width, nominal6 in
  • Length8 ft
  • How many pieces1
  • Price per board foot, 0 to skip0 $

Total board feet8 bf

Board feet per piece8
Pieces1
Total board feet8
Total linear feet8 lf

Length compared

The same stick in every length the yard normally stocks.

LengthTotal board feet
8 ft8 bf
10 ft10 bf
12 ft12 bf
14 ft14 bf
16 ft16 bf

What else matters here

A 2x6x8 is exactly 8 board feet, which is the same as a 2x4x12. That is the point of the unit: board feet measure volume, so any two pieces holding the same amount of wood count the same no matter what shape they are in.

It is also why a board foot price is the only fair way to compare stock of different dimensions. A per piece price tells you nothing until you know what the piece is.

What this calculator assumes

  • A board foot is nominal thickness times nominal width times length in feet, divided by 12. Use the nominal size, the 2 and the 6 in a 2x6, not the real 1.5 by 5.5.
  • Hardwood is sold by the board foot. Softwood framing is usually sold by the piece, so this is for pricing and for comparing two quotes written differently.

Questions people ask

How many board feet in a 2x6x8?

Exactly 8 board feet.

What is a board foot?

The volume of a piece one inch thick, twelve inches wide and twelve inches long, which is 144 cubic inches. Board feet are a volume measure, so a 1x12 and a 2x6 of the same length hold the same number of them.

Should I use nominal or actual size?

Nominal. Lumber has been sold and priced on its nominal size for a century, so a 2x4 counts as two by four even though it measures 1.5 by 3.5 inches. Use actual dimensions only for rough sawn stock that was never planed.

Different numbers?

The board foot calculator takes any dimensions you like and hands back the same list.

Other common sizes