Weight of Dimensional Lumber
Roof Online Staff
Scroll down to see the size and weight table.
The weight of lumber depends on the size of the board, of course. The moisture content of the wood matters as well (whether it is green, air-dried, or oven-dried).
But it also depends on what species of wood was used to produce the board.
An air-dried 2x4 x 8-foot-long lumber board made out of Douglas Fir weighs about 10 pounds. A board with the same dimensions made out of Sitka Spruce only weighs around 8 pounds.
Almost all lumber used for construction in the U.S. is made from spruce, pine, and fir, so our chart has weights for lumber made from all three.
Read on to learn more about lumber weights, or scroll to the end for the full weight chart.
Lumber Dimensions Table (has dimensions in millimeters)
About the Lumber Weight Chart
The following table provides the approximate weight (dead load, self-weight) per linear foot of the various sizes of dimensional lumber (also called “structural lumber” or “finished lumber”) used in building construction in the US.
The table provides the air-dried weight of lumber produced from three commonly used tree species: Sitka Spruce, Douglas Fir, and Southern Yellow Pine.
Green or Oven-Dry Lumber
For help figuring out the weight of green or oven-dry lumber, to read more about how these weights are calculated, or to see an extensive list of the weights of other types of wood, see "Weights of Various Woods Grown in the United States" from the Forest Products Laboratory, United States Forest Service.
Nominal vs. Actual Lumber Dimensions
For an explanation of the difference between nominal lumber dimensions and actual dimensions, see our Lumber Dimensions Table.
The values given in the table are meant to provide a general idea of typical lumber weights, and should not be used if precise values are needed for critical engineering calculations.
When precision is necessary, always refer to the specification sheet for the actual, specific product you intend to use, or contact the technical department of the producer.
You can see dimensional lumber at the Home Depot.* The approximate weights of the actual pieces of lumber for sale are often given in the product descriptions, so this can be a pretty good resource for calculating lumber weights. Home Depot will also deliver lumber to your home, by the way.