Resources

Hardwood Lumber Conversion Chart


Board Measure Equivalents

Multiply the total lineal feet for the appropriate dimension by the factor next to the width of the board, or divide the total lineal feet by the reciprocal of the factor

4/4
Board
Width
Board Feet
(Multiplier)
Reciprocal
(Divisor)
4″ .33334 3
5″ .41667 2.4
6″ .5 2
7″ .58334 1.715
8″ .66667 1.5
9″ .75 1.334
10″ .83334 1.2
11″ .91667 1.0909
12″ 1 1
13″ 1.08333 0.92308
14″ 1.16667 0.85715
15″ 1.25 0.8
5/4
Board
Width
Board Feet
(Multiplier)
Reciprocal
(Divisor)
4″ .41667 2.4
5″ .52084 1.92
6″ .625 1.6
7″ .72916 1.37
8″ .83334 1.2
9″ .9375 1.067
10″ 1.04167 .96
11″ 1.14583 .873
12″ 1.25 .8
13″ 1.35417 0.73846
14″ 1.45833 0.69565
15″ 1.5625 0.64
6/4
Board
Width
Board Feet
(Multiplier)
Reciprocal
(Divisor)
4″ .5 2
5″ .625 1.6
6″ .75 1.33333
7″ .875 1.1429
8″ 1 1
9″ 1.125 .88889
10″ 1.25 .8
11″ 1.375 .728
12″ 1.5 .66666
13″ 1.625 0.61539
14″ 1.75 0.57143
15″ 1.875 0.53333
8/4
Board
Width
Board Feet
(Multiplier)
Reciprocal
(Divisor)
4″ .66667 1.5
5″ 8.3334 1.2
6″ 1 1
7″ 1.16667 .857
8″ 1.33334 .75
9″ 1.5 .66667
10″ 1.66667 .6
11″ 1.8333 .5455
12″ 2 .5
13″ 2.16667 0.46154
14″ 2.3333 0.42857
15″ 2.5 0.4
10/4
Board
Width
Board Feet
(Multiplier)
Reciprocal
(Divisor)
4″ .83333 1.2
5″ 1.04167 0.96
6″ 1.25 0.8
7″ 1.45833 0.6857
8″ 1.66667 0.6
9″ 1.875 0.53333
10″ 2.08334 0.48
11″ 2.29167 0.43637
12″ 2.5 0.4
13″ 2.70833 0.36923
14″ 2.19667 0.34286
15″ 3.125 0.32
12/4
Board
Width
Board Feet
(Multiplier)
Reciprocal
(Divisor)
4″ 1 1
5″ 1.25 0.8
6″ 1.5 0.66667
7″ 1.75 0.57143
8″ 2 0.5
9″ 2.25 0.44444
10″ 2.5 0.4
11″ 2.75 0.36364
12″ 3 0.33333
13″ 3.25 0.30769
14″ 3.5 0.28571
15″ 3.75 0.26667