Western Lumber Conversions

Board Measure Equivalents

This table, based on Standard Nominal Sizes from (1"×2" to 8"×24") has been developed by Western Wood Products Association as an aid to (a) determine lineal (linear) feet per 1000 board feet and (b) find the equivalents between lineal and board feet.

The common lengths between 6′ and 16′ are tabulated below; a formula is provided for calculating other lengths.

The table can be used when dollar amounts are added, as the basis of converting: (a) cost per 1000 board feet to cost per lineal foot, or (b) cost per piece.

Refer to the rest of the additional information and examples of how to use the table to solve problems.

Actual dressed (surfaced), green and dry sizes are included for reference; however, nominal sizes are always used for board footage calculations.

When using this table, start with the NOMINAL SIZES column. Read to the left for lineal foot information. Read to the right for board foot information.

For lengths, other than those tabulated, the formula for converting lineal feet to board feet is: T x W x L = BOARD FEET/12

Lineal Feet per 1000 Board Feet [1]Lineal Feet per Board Foot [2]Green Surfaced Size for more than 19% moist. content [3]Normal Size [4]Dry Surfaced Size for ≤ 19% moisture content [5]Board Feet per Lineal Foot [6]Board Feet Lengths [7]
6′8′10′12′14′16′
BOARDS6000
4000
3000
2000
1500
1200
1000
857		6.0000
4.0000
3.0000
2.0000
1.5000
1.2000
1.0000
0.8571		Surfaced Dry Only1 x 2
1 x 3
1 x 4
1 x 6
1 x 8
1 x 10
1 x 12
1 x 14		3/4 x 1 1/2″
3/4 x 2 1/2
3/4 x 3 1/2
3/4 x 5 1/2
3/4 x 7 1/4
3/4 x 9 1/4
3/4 x 11 1/4
3/4 x 13 1/4		0.1667
0.2500
0.3333
0.5000
0.6667
0.8333
1.0000
1.1667		1
1.5
2
3
4
5
6
7		1.33
2
2.67
4
5.33
6.67
8
9.33		1.67
2.5
3.33
5
6.67
8.33
10
11.67		2
3
4
6
8
10
12
14		2.33
3.5
4.67
7
9.33
11.67
14
16.33		2.67
4
5.33
8
10.67
13.33
16
18.67
LUMBER3000
2000
1500
1000
750
600
500
429		3.0000
2.0000
1.5000
1.0000
0.7500
0.6000
0.5000
0.4288		1 9/16 x 1 9/10
1 9/16 x 2 9/10
1 9/16 x 3 9/10
1 9/16 x 5 9/8
1 9/16 x 7 1/2
1 9/16 x 9 1/2
1 9/16 x 11 1/2
1 9/16 x 13 1/2		2 x 2
2 x 3
2 x 4
2 x 6
2 x 8
2 x 10
2 x 12
2 x 14		1 1/2 x 1 1/2
1 1/2 x 2 1/2
1 1/2 x 3 1/2
1 1/2 x 5 1/2
1 1/2 x 7 1/4
1 1/2 x 9 1/4
1 1/2 x 11 1/4
1 1/2 x 13 1/4		0.3333
0.5000
0.6667
1.0000
1.3333
1.6667
2.0000
2.3333		2
3
4
6
8
10
12
14		2.67
4
5.33
8
10.67
13.33
16
18.67		3.33
5
6.67
10
13.33
16.67
20
23.33		4
6
8
12
16
20
24
28		4.67
7
9.33
14
18.67
23.3
28
32.67		5.33
8
10.67
16
21.33
26.67
32
37.33
1333
1000
667
500
400
333
286
250		1.3333
1.0000
0.6667
0.5000
0.4000
0.3333
0.2857
0.2500		2 9/16 x 2 9/10
2 9/16 x 3 11/16
2 9/16 x 5 9/8
2 9/16 x 7 1/2
2 9/16 x 9 1/2
2 9/16 x 11 1/2
2 9/16 x 13 1/2
2 9/16 x 15 1/2		3 x 3
3 x 4
3 x 6
3 x 8
3 x 10
3 x 12
3 x 14
3 x 16		2 1/2 x 2 1/2
2 1/2 x 3 1/2
2 1/2 x 5 1/2
2 1/2 x 7 1/2
2 1/2 x 9 1/4
2 1/2 x 11 1/4
2 1/2 x 13 1/4
2 1/2 x 15 1/4		0.7500
1.0000
1.5000
2.0000
2.5000
3.0000
3.5000
4.0000		4.5
6
9
12
15
18
21
24		6
8
12
18
20
24
28
32		7.5
10
15
20
25
30
35
40		9
12
18
24
30
36
42
48		10.5
14
21
28
35
42
49
58		12
16
24
32
40
48
56
64
750
500
375
300
250
214
188		0.7500
0.5000
0.3750
0.3000
0.2500
0.2143
0.1875		3 9/10 x 3 9/10
3 9/10 x 5 5/8
3 9/18 x 7 1/2
3 9/15 x 9 1/2
3 9/15 x 11 1/2
3 9/18 x 13 1/2
3 9/15 x 15 1/2		4 x 4
4 x 6
4 x 8
4 x 10
4 x 12
4 x 14
4 x 16		Surfaced Green Only1.3333
2.0000
2.6667
3.3333
4.0000
4.6667
5.3333		8
12
16
20
24
28
32		10.67
16
21.33
26.67
32
37.33
42.67		13.33
20
26.67
33.33
40
46.67
53.33		16
24
32
40
48
56
64		18.67
28
37.33
46.67
56
65.33
74.67		21.33
32
42.67
53.33
64
74.67
85.33
TIMBER333
250
200
167
143
125
111
100		0.3333
0.2500
0.2080
0.1667
0.1429
0.1250
0.1111
0.1000		5 1/2 x 5 1/2
5 1/2 x 7 1/2
5 1/2 x 9 1/2
5 1/2 x 11 1/2
5 1/2 x 13 1/2
5 1/2 x 15 1/2
5 1/2 x 17 1/2
5 1/2 x 19 1/2		6 x 6
6 x 8
6 x 10
6 x 12
6 x 14
6 x 16
6 x 18
6 x 20		Surfaced Green Only3.0000
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000		18
24
30
36
42
48
54
60		24
32
40
48
56
64
72
80		30
40
50
60
70
80
90
100		36
48
60
72
84
96
108
120		42
56
70
84
98
112
126
140		48
64
80
96
112
128
144
160
188
150
125
107
94
83
75
68
63		0.1875
0.1500
0.1250
0.1071
0.0838
0.0833
0.0750
0.0682
0.0625		7 1/2 x 7 1/2
7 1/2 x 9 1/2
7 1/2 x 11 1/2
7 1/2 x 13 1/2
7 1/2 x 15 1/2
7 1/2 x 17 1/2
7 1/2 x 19 1/2
7 1/2 x 21 1/2
7 1/2 x 23 1/2		8 x 8
8 x 10
8 x 12
8 x 14
8 x 16
8 x 18
8 x 20
8 x 22
8 x 24		Surfaced Green Only5.3333
6.6667
8.0000
9.3333
10.6667
12.0000
13.3333
14.6667
16.0000		32
40
48
58
64
72
80
88
96		42.67
53.33
64
74.67
85.33
96
106.67
117.33
128		53.33
66.67
80
93.33
106.67
130
133.33
146.67
160		64
80
96
112
128
144
180
176
192		74.67
99.33
112
130.67
149.33
168
186.67
205.33
224		85.33
106.67
128
149.33
170.67
192
213.33
234.37
256
[1] LINEAR FEET PER 1000 BOARD FEET: lineal feet, in given size pieces, needed to equal 1000 board feet.

[2] LINEAL FEET PER BOARD FEET: the lineal feet, in given size pieces, needed to equal one board foot.

[3] GREEN SURFACED SIZE FOR MORE THAN 19% MOISTURE CONTENT: this is the actual (surfaced) size of unseasoned lumber which, by definition, has a moisture content in excess of 19%.

[4] NOMINAL SIZE: is the standard size designation for lumber, used for convenience.

[5] DRY SURFACED SIZE FOR 19% OR LESS MOISTURE CONTENT: this is the actual (surfaces) size of air or kiln-dried, seasoned lumber which, by definition, has a moisture content of 19% or less.

[6] BOARD FEET PER LINEAL FOOT: the number of board feet per one foot of length, in a given size.

[7] BOARD FEET: the columns in this section give board footages for corresponding lengths and sizes. Lengths are given from 6′ to 16′; in 2′ increments. Sizes are read from the NOMINAL SIZES column in the middle of the table.