Lumber Conversion Factors
Reed Mill & Lumber Company, Inc.
Manufacturer & Distributor

Lumber
 Nominal Size

Linear to Board Ft.
Ft. Length Times (x)
-either-
Factor or Equivalent

Board to Linear Ft.
Board Feet Times (x)
-either-
Factor or Equivalent

Square to Board Ft.
Sq Feet Times (x) Factor

Face Size
Tongue and
Groove and
Shiplap

Tongue & Groove Shiplap Drop

Bevel Sidings with 1" Overlap
       1 x 2
       1 x 3
       1 x 4*
       1 x 6
       1 x 8
       1 x 10
       1 x 12

1/6
1/4
1/3
1/2
2/3
5/6
 1

     .16667
    .25
    .33334
    .50
    .66667
    .83334
  1.0

6
4
3
2
1-1/2
1-1/5
1

      6.0
     4.0
     3.0
     2.0
     1.5
     1.2
     1.0

1.75
1.50
1.34
1.20
1.20
1.20
1.20

4.00
2.00
1.60
1.41
1.33
1.25
1.20

         1-1/4"
        2"
        3" **
        5"
        6-5/8"
        8-5/8"
      10-5/8"
       2 x 2
       2 x 3
       2 x 4
       2 x 6
       2 x 8
       2 x 10
       2 x 12

1/3
1/2
2/3
1
1-1/3
1-2/3
2

     .33334
    .50
    .66667
  1.0
  1.33334
  1.66667
  2.0

3
2
1-1/2
1
3/4
3/5
1/2

      3.0
     2.0
     1.5
     1.0
      .75
      .60
      .50

3.50
3.00
2.68
2.40
2.40
2.40
2.40

8.00
4.00
3.20
2.82
2.66
2.50
2.40

         1-1/4"
        2"
        3"
        5"
        6-58"
        8-5/8"
       10-5/8"

        3 x 6
       3 x 8
       3 x 10
       3 x 12

1-1/2
2
1-1/2
3

   1.5
  2.0
  2.5
  3.0

2/3
1/2
2/5
1/3


   .66667 
     50      
     40      
    .33334 

5/4 x 6 Cypress

         
       Sq Ft x 1.43 = Board Feet
       Board Feet  x 1.6 = Linear Feet
       4 x 4
       4 x 6
       4 x 8
       4 x 10
       4 x 12

1-1/3
2
2-2/3
3-1/3
4

   1.33334
  2.0
  2.66667
  3.33334
  4.0

3/4
1/2
3/8
3/10
1/4

      .75
     .50
     .375
     .30
     .25		                  

* 1 x 4 ECB SF to BF = 1.26

** 1 x 4 ECB Face = 3-3/16"

* MILLED PRODUCTS ARE OUR SPECIALTY *

PHONE 303-292-2922   800-655-0454    FAX  303-292-3627    E-MAIL  co@reedmill.com 

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