Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Softwood Lumber - Dimensions

Commercial softwood lumber dimension chart - nominal and actual sizes.

Sponsored Links

Dimensional lumber is a term used for lumber that is finished - planed and cut - to a standardized width and depth specified in inches.

Structural lumber - dimensions

Commercial lumber dimensions - American Softwood Lumber Standards - nominal and actual sizes are indicated in the table below.

General rule converting nominal to actual softwood dimensions

  • subtract 1/4 inch for dimensions under 2 inches (51 mm)
  • subtract 1/2 inch for dimensions under 8 inches (200 mm)
  • subtract 3/4 inch for larger dimensions
Nominal Size
(in x in)
Actual Size 
(in x in)(mm x mm)Weight
(lb/ft)
1 x 1 3/4 x 3/4 19 x 19 0.14
1 x 2 3/4 x 1 1/2 19 x 38 0.27
1 x 3 3/4 x  2 1/2 19 x 64 0.47
1 x 4 3/4 x 3 1/2 19 x 89 0.64
1 x 6 3/4 x 5 1/2 19 x 140 1.00
1 x 8 3/4 x 7 1/4 19 x 184 1.32
1 x 10 3/4 x 9 1/4 19 x 235 1.69
1 x 12 3/4 x 11 1/4 19 x 286 2.05
2 x 2 1 1/2 x 1 1/2 38 x 38 0.55
2 x 3 1 1/2 x 2 1/2 38 x 64 0.94
2 x 4 1 1/2 x 3 1/2 38 x 89 1.28
2 x 6 1 1/2 x 5 1/2 38 x 140 2.00
2 x 8 1 1/2 x 7 1/4 38 x 184 2.64
2 x 10 1 1/2 x 9 1/4 38 x 235 3.37
2 x 12 1 1/2 x 11 1/4 38 x 286 4.10
2 x 14 1 1/2 x 13 1/4 38 x 337 4.83
3 x 3 2 1/2 x 2 1/2 64 x 64 1.52
3 x 4 2 1/2 x 3 1/2 64 x 89 2.13
3 x 6 2 1/2 x 5 1/2 64 x 140 3.34
3 x 8 2 1/2 x 7 1/4 64 x 184 4.41
3 x 10 2 1/2 x 9 1/4 64 x 235 5.62
3 x 12 2 1/2 x 11 1/4 64 x 286 6.84
3 x 14 2 1/2 x 13 1/4 64 x 337 8.05
3 x 16 2 1/2 x 15 1/4 64 x 387 9.27
4 x 4 3 1/2 x 3 1/2 89 x 89 2.98
4 x 6 3 1/2 x 5 1/2 89 x 140 4.68
4 x 8 3 1/2 x 7 1/4 89 x 184 6.17
4 x 10 3 1/2 x 9 1/4 89 x 235 7.78
4 x 12 3 1/2 x 11 1/4 89 x 286 9.57
4 x 14 3 1/2 x 13 1/4 89 x 337 11.28
4 x 16 3 1/2 x 15 1/4 89 x 387 12.98

Weight is based on dry wood with 35 lb/ft3 (560 kg/m3) actual volume.

  • Rough Lumber - sawn, trimmed and edged - faces are rough with saw marks
  • Surfaced Lumber (dressed) - Rough lumber that has been smoothed on one or more sides and edges by a surfacing machine. 
  • Worked Lumber - Surfaced lumber that has been matched and  patterned

Dry lumber is defined as lumber with less than 19% moisture. Unseasoned or green lumber is lumber with more than 19% moisture.

 

Sponsored Links

Related Topics

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate
About the Engineering ToolBox!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Citation

This page can be cited as

  • Engineering ToolBox, (2009). Softwood Lumber - Dimensions. [online] Available at: https://www.engineeringtoolbox.com/softwood-lumber-dimensions-d_1452.html [Accessed Day Mo. Year].

Modify access date.

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

3 10

Sponsored Links
.