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Lumber - Weights

Weights of green, kiln dried and pressure treated lumber boards

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Lumber dimensions - inches vs. mm

The density and weight of lumber varies with the water or moisture content in the wood. Typical weights for green, kiln dried and pressure treated lumber boards are indicated in the tables below.  

Note that nominal dimensions are not the same as actual lumber dimensions.

Green Lumber Boards

Weight (lb)
Nominal
Dimension
(in x in)
Length (ft)
18101216
2 x 4 1.7 13 17 20 27
4 x 4 3.6 29 36 43 58
4 x 6 5.4 43 54 65 86
4 x 8 7.2 58 72 86 115
4 x 10 9 72 90 108 144
4 x 12 10.8 86 108 130 173
6 x 6 8.1 65 81 97 130

Drying lumber takes time. Smaller and shorter boards use considerable less time than larger and longer boards. For larger pieces natural drying takes months and often even more than a year - depending on the surrounding temperature, moisture and air circulation. Smaller shorter pieces can dry in weeks.  

Kiln Dried Lumber Boards

Weight (lb)
Nominal
Dimension
(in x in)
Length (ft)
18101216
2 x 4 1.3 11 13 16 21
2 x 6 2 16 20 24 32
2 x 8 2.7 21 27 32 43
2 x 10 3.3 27 33 40 53
2 x 12 4 32 40 48 64

Weight of dry kilned lumber boards - imperial units

  • Right click the chart and open in new window for printing

Weight of dry kilned lumber boards - metric units

Example - Estimating Shipment Weight of Lumber

Shipment Lumber Weight - example

The shipment weight of 600 ft 2 x 4 dried lumber can be estimated from the chart to be approximately

800 lb

Pressure Treated Lumber Boards

Pressure treated with chemical preservatives.

Weight (lb)
Nominal
Dimension
(in x in)
Length (ft)
18101216
2 x 4 2.1 17 21 26 34
2 x 6 3.2 26 32 38 51
2 x 8 4.4 35 44 53 70
2 x 10 5.5 44 55 66 88
2 x 12 6.6 53 66 79 106
4 x 4 4.8 38 48 58 77
4 x 6 7 56 70 84 112
4 x 8 9.3 75 93 112 149
4 x10 11.7 93 117 140 187
4 x 12 14 112 140 168 224

Weight of pressure treated lumber boards - imperial units

Weight of pressure treated lumber boards - metric units

  • Right click the chart and open in new window for printing
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