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Wood Weight Calculator

Weight of a board or a whole project from its volume and the density of the species.

Wood weight decides whether one person can carry the bench, whether the shelf bracket is adequate and what the shipping will cost. This calculator works from the volume of your stock and the published density of the species, and it shows the working so you can see what the estimate depends on.

At a glance

What you enter
Length of one piece, Nominal width, Nominal thickness, How many pieces, Unit system, Wood species, Use dressed dimensions
What you get
Total volume, Total weight, Weight of one piece, Total weight in kilograms, Pounds per board foot
Formula shown
Yes, every step, right below your results.
Cost and privacy
Free, no account needed, and nothing you type is stored.

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Measured in the unit you choose below.

The name on the price tag, so 6 for a 1x6 and 4 for a 2x4.

The name on the price tag, so 1 for a 1x6 and 2 for a 2x4.

Unit system
Wood species

Leave off for the nominal size on the price tag, turn on for the size the board actually measures after planing.

Reset

Results are estimates for general information only, always verify with a professional or official source before acting on them.

How to use the Wood Weight Calculator

  1. 1 Enter Length of one piece, Measured in the unit you choose below.
  2. 2 Enter Nominal width, The name on the price tag, so 6 for a 1x6 and 4 for a 2x4.
  3. 3 Enter Nominal thickness, The name on the price tag, so 1 for a 1x6 and 2 for a 2x4.
  4. 4 Enter How many pieces
  5. 5 Enter Unit system
  6. 6 Enter Wood species
  7. 7 Enter Use dressed dimensions, Leave off for the nominal size on the price tag, turn on for the size the board actually measures after planing.
  8. 8 Press Calculate. You get Total volume, Total weight, Weight of one piece, Total weight in kilograms, Pounds per board foot, and every intermediate step stays visible under "How is this calculated?"
  9. 9 Change one number at a time to see what moves the result, that is usually the most useful thing a calculator can tell you.

Worked examples

Real numbers run through this calculator. Open any example to load it into the form above and change it.

One oak board, 1x6 at 8 feet

Nominal 1x6 oak, weighed as the dressed board.

You enter

Length of one piece
8
Nominal width
6
Nominal thickness
1
How many pieces
1
Unit system
2
Wood species
1
Use dressed dimensions
Yes

You get

Total volume
0.23 cu ft
Total weight
10.31 lb
Weight of one piece
10.31 lb
Total weight in kilograms
4.68 kg
Pounds per board foot
2.58 lb/bf

The dressed board is 0.229 cubic feet, so about 10 pounds of oak.

Open this example in the calculator โ†’

Workbench top in hard maple

A 72 inch maple top, 24 inches wide and 2 inches thick, as one piece.

You enter

Length of one piece
72
Nominal width
24
Nominal thickness
2
How many pieces
1
Unit system
1
Wood species
2
Use dressed dimensions
Yes

You get

Total volume
1.45 cu ft
Total weight
63.94 lb
Weight of one piece
63.94 lb
Total weight in kilograms
29.00 kg
Pounds per board foot
2.66 lb/bf

A laminated top of this size is heavy enough to need two people.

Open this example in the calculator โ†’

Twenty pine studs

Twenty nominal 2x4s at 8 feet in loblolly pine, at nominal volume.

You enter

Length of one piece
8
Nominal width
4
Nominal thickness
2
How many pieces
20
Unit system
2
Wood species
10
Use dressed dimensions
No

You get

Total volume
8.89 cu ft
Total weight
311.11 lb
Weight of one piece
15.56 lb
Total weight in kilograms
141.12 kg
Pounds per board foot
2.92 lb/bf

Nominal volume overstates the wood, but it is what a delivered pack is priced on.

Open this example in the calculator โ†’

Frequently asked questions

How much does a 2x4 weigh?
A kiln dried 2x4 that is 8 feet long weighs roughly 9 to 11 pounds in softwood and 13 to 15 pounds in a dense hardwood. The calculation uses the dressed volume of 1.5 by 3.5 by 96 inches, which is 0.29 cubic feet, multiplied by the density of the species. A pack of fifty 2x4s in softwood is therefore around 500 pounds, which is worth knowing before you load a trailer.
How do I calculate the weight of wood?
Work out the volume in cubic feet and multiply by the density of the species in pounds per cubic foot. For a board measured in inches, multiply thickness by width by length and divide by 1728 to get cubic feet. A 1x6 that is 8 feet long is 0.75 times 5.5 times 96 divided by 1728, which is 0.229 cubic feet, and at 35 pounds per cubic foot that is 8 pounds.
Does moisture content change the weight of wood?
Substantially. Water weighs about 62 pounds per cubic foot, and green timber can be half water by weight. A board that is green can weigh twice what the same board weighs once it is kiln dried, which is why a delivery of wet lumber is heavier than the same order in dry stock. The densities here describe wood at about 12 percent moisture content, which is typical for indoor furniture stock.
Which wood is the heaviest?
Among the common furniture species, hard maple, oak, ash and birch are the heaviest at around 42 to 45 pounds per cubic foot, followed by teak, walnut and mahogany. Softwoods such as eastern white pine are much lighter at around 25. Exotic species such as ipe and lignum vitae are heavier than any of these and can exceed 60 pounds per cubic foot, which matters on a deck or a workbench where the weight is structural.

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Terms used here

Short, plain-language definitions of the words this calculator uses.

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