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Board Feet Chart

Board Foot - volume measurement of lumber

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Board feet chart

Board foot is a volume measurement of lumber, where

  • 1 board foot = 144 in3 = 1⁄12 ft3 = 2360 cm3 = 2.360 liters = 0.002360 m3

Board feet can be calculated as

BF = W T L / 12                                 (1)

where

BF = board feet

W = nominal lumber width (in)

T = nominal lumber thickness (in)

L = nominal lumber length (ft)

Board Feet - Lumber thickness 1"

Board Feet
Width
(in)
Length (ft)
6810121416
2 1.0 1.33 1.67 2.0 2.33 2.67
3 1.5 2.0 2.5 3.0 3.5 4.0
4 2.0 2.67 3.33 4.0 4.67 5.33
6 3.0 4.0 5.0 6.0 7.0 8.0
8 4.0 5.33 6.67 8.0 9.33 10.67
10 5.0 6.67 8.33 10.0 11.67 13.33
12 6.0 8.0 10.0 12.0 14.0 16.0

Board Feet - Lumber thickness 2"

Board Feet
Width
(in)
Length (ft)
6810121416
4 4.0 5.33 6.67 8 9.33 10.67
6 6.0 8.0 10.0 12 14 16
8 8.0 10.67 13.33 16 18.67 21.33
10 10.0 13.33 16.67 20 23.33 26.67
12 12.0 16.0 20 24 28 32

Quick Approximation for Calculating Board Feet

  • 1 x 4 - divide linear length (feet) by 3 - (length x 1/3)
  • 1 x 6 - divide linear length (feet) by 2  - (length x 1/2)
  • 1 x 8 - multiply linear length (feet) by 0.66  - (length x 2/3)
  • 1 x 12 - linear length (feet) equals board feet  - (length x 1) 
  • 2 x 4 - multiply linear length by 0.66 - (length x 2/3)
  • 2 x 6 -  linear length (feet) equals board feet - (length x 1)
  • 2 x 8 - multiply linear length by 1.33  - (length x 1 1/3)
  • 2 x 12 - multiply linear length by 2  - (length x 2)
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