Lumber Weight Calculator
Estimate what a board or a load of lumber weighs by species, from its size or board feet.
Change the values and press Calculate to work out your own figures.
From the board's size
Enter the size and choose the species.
Show the working
- weight = volume × density
From board feet
Enter the board feet and choose the species.
Show the working
- weight = volume × density
How to use it
Enter the size and choose the species. Enter the board feet and choose the species.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
weight = volume × density; 1 board foot = 144 cu in
Moisture
Kiln-dried lumber is about 6–12% moisture; green or treated lumber can weigh 50% more.
Questions
How much does a 2 × 4 × 8 of Douglas fir weigh?
About 9.47 lb dry (1.5 × 3.5 in actual).
Formulas
weight = volume × density; 1 board foot = 144 cu in
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.