Lumber Weight Calculator
Table of contents
Lumber vs TimberHow to calculate lumber weight?How to use our lumber weight calculatorLumber density chartFAQsOur lumber weight calculator makes it easy to determine the weight and volume of your lumber. By using the lumber weight formula, you can calculate the weight for various wood types. Simply select the wood type from our lumber density chart, input the dimensions, and enter the quantity. You will instantly receive accurate measurements for single pieces and the total for multiple pieces.
Lumber vs Timber
Lumber and timber are terms often used interchangeably but have different meanings. Lumber refers to wood that has been processed into beams or planks and is ready for use in construction. Timber, on the other hand, generally refers to trees or wood in its natural, unprocessed state. Once the timber is cut and prepared, it becomes lumber.
A fun fact: in the UK, timber is commonly used to describe what Americans call lumber. Whether you're building a house or crafting furniture, this difference is essential for anyone working with wood.
Our lumber weight calculator helps you determine the exact weight of your lumber, ensuring you have the right amount for your project. However, if you're looking for more timberrelated tools, please check out our specialized calculators that will calculate a tree's value, height, and age!
How to calculate lumber weight?
Calculating the weight of lumber involves a simple formula:
weight = volume × density
The dimensions of the lumber determine the volume. When we multiply its length, width, and thickness together. Density, which varies based on the type of wood, is a measure of how much mass is contained in a specific volume of material. Different types of wood have different densities, so it's essential to know the type of wood you're using. For instance, oak is denser and heavier than pine.
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How to use our lumber weight calculator
As we explained earlier, lumber is wood processed into beams and planks. It is commonly used in construction and furniture making. We designed this lumber weight calculator to help you determine the weight and volume of rectangular pieces of lumber, such as beams and planks.
To use our calculator, follow these simple steps:

Choose the type of wood — Select the wood type from the dropdown list. Different woods have different densities, which affect the weight.

Enter the dimensions — Input the width, length, and thickness of a single piece of lumber. These measurements are usually in inches or centimeters, depending on your preference.

Enter the quantity — Specify the number of pieces of lumber of that size. This information is used to calculate the total weight and volume.

Once you've entered these details, the calculator will automatically display the weight and volume for a single piece of lumber. It will also display the total weight and volume for all the pieces. This makes it easy to estimate how much lumber you'll need for your project and understand the load you'll be working with.
Our calculator simplifies the process, ensuring you have accurate information for your construction or woodworking projects.
Lumber density chart
Understanding the density of different wood species is important for weight calculations. Below is a chart listing the densities of various types of lumber in pounds per cubic foot (lb/ft³).
Species  Density lb/ft³  Species  Density lb/ft³ 

Alder, red  46  Maple, red  50 
Apple  55  Maple, silver  45 
Ash, green  47  Maple, sugar  56 
Ash, Oregon  48  Oak, black  62 
Ash, white  48  Oak, Cali. black  66 
Aspen, quaking  43  Oak, English  52 
Bald cypress  51  Oak, live  76 
Basswood  42  Oak, pin  64 
Beech  54  Oak, post  63 
Birch, paper  50  Oak, red  63 
Birch, Yellow  57  Oak, scarlet  64 
Butternut  46  Oak, white  62 
Cedar, incense  45  Osage orange  62 
Cedar, western red  28  Pecan  61 
Cherry, black  45  Persimmon  63 
Chestnut  55  Pine, loblolly  53 
Chinaberry  50  Pine, lodgepole  39 
Cottonwood  49  Pine, longleaf  55 
Elm, American  54  Pine, ponderosa  46 
Fir, Douglas  39  Pine, slash  58 
Fir, noble  29  Pine, sugar  52 
Fir, white  47  Pine, white  36 
Gum, black  45  Poplar, yellow  38 
Gum, red  50  Redwood coastal  50 
Hackberry  50  Sassafras  44 
Hemlock eastern  49  Spruce, Red  34 
Hemlock western  41  Spruce, Sitka  32 
Hickory Shagbark  64  Sweetgum  55 
Horse chestnut  41  Sycamore  52 
Larch  51  Tamarack  47 
Locust, black  58  Walnut, black  58 
Locust, honey  63  Willow  32 
Magnolia ev.  59 
How do I calculate the weight of lumber?
If you're wondering how to calculate lumber weight, just follow these instructions:
 Measure the dimensions (width, length, and thickness) of the lumber.
 Calculate the volume by multiplying these dimensions.
 Determine the wood's density (check a density chart if needed).
 Multiply the volume by the density to get the weight.
The result is your lumber weight!
What is the weight of a 4×4 inch piece of oak lumber, 6 feet long?
A 4×4 piece of oak lumber that is 6 feet long weighs approximately 45 pounds. For this calculation, we use the average density of oak, which is 67 lb/ft³ (lumber weight per foot).
Using the lumber weight formula, we multiply the volume (1 cubic foot) by the density to get the weight.
How much does a standard 2×4 piece of lumber weigh?
The weight of a standard 2×4 piece of lumber depends on its length and the type of wood. For example, an 8footlong 2×4 made from pine typically weighs half as much as a piece of oak of the same size due to the fact that oak has a higher density.
What factors affect the weight of lumber?
Several factors affect the weight of lumber:
 Wood species — different types of wood have different densities;
 Moisture content — wet wood is heavier than dry wood;
 Dimensions — the length, width, and thickness of the lumber determine its volume; and
 Treatment — lumber weight per foot is affected by pressure used in the production process.