Log Weight Calculator
Table of contents
Weight of wood and the wood density chartHow much does a log weigh? — Huber's formulaUsing our log weight calculatorThe importance of knowing how to calculate the weight of a logWant to learn more?FAQsThis log weight calculator or wood weight calculator will help you estimate the weight of a log or board made of any of the common species of wood at any desired length and crosssectional dimensions.
In this calculator, you will learn to answer the question "How much does a log weigh?" and what affects the weight of wood. You will learn about the wood density chart, also known as the "green" log weight chart, as well as how to calculate volume of a log using Huber's Formula. Keep on reading to start learning how to calculate the weight of a log.
Weight of wood and the wood density chart
The weight of wood mainly depends on three factors: the wood species, the volume of the log, and its moisture content. The wood species tells us the density of the wood. However, the density of the wood varies depending on its moisture content.
The moisture content of wood is the amount of water within the wood. It ranges between 150% or more for fresh wood and as low as 5% for processed and dried wood. For wood, we determine its moisture content by taking the percentage of the water's weight in freshlycut wood to the same wood's ovendry weight. A 250kg freshlycut wood weighing 100 kg after ovendrying would have a moisture content of 150%. The higher the moisture content is, the heavier the wood weighs. In this calculator, we consider the "green" density of wood, which is the density of a piece of freshly cut wood.
The green density varies from tree to tree and does not pertain to a particular moisture content for each tree species. As a reference, you can check the wood density chart below, which is also sometimes called the green log weight chart, for the green density of the most common tree species found on the market today:
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 
Even though it shows the density, this is also known as the green log weight chart because it instantly shows us the green weight of wood per cubic foot of volume.
💡 Learn more about density and the densities of other common materials, such as metals, nonmetals, and gas (to name a few), by checking out our density calculator.
How much does a log weigh? — Huber's formula
Knowing the green density of the tree species we are considering is the first step toward answering "How to calculate the weight of a log?". In the next step, we must multiply this density by the log's volume to obtain its weight. We can express that in equation form, as shown below:
where:
 $\small\text{weight}$ is the weight of the log in pounds ($\small\text{lb}$);
 $\small\rho_\text{green}$ is the "green" weight of the wood per cubic foot ($\small\tfrac{\text{lb}}{\text{ft}^3}$); and
 $\small v$ is the volume of the log in cubic feet ($\small\text{ft}^3$).
🙋 Need the calculated weight in other units? Check our weight converter for the essential conversion factors for your conversion needs.
For this wood weight calculator, we use Huber's formula to determine a log's volume. In Huber's formula, we first need to find the log's diameter at the center of the entire log's length. We can do this either by directly measuring the diameter in the middle of the log or by getting the average of the diameters on both ends of the log.
Due to the nature of a tree, the log's diameter near the top end of the tree is smaller than the log's diameter towards the base (or roots). Keeping these concepts in mind, we now have Huber's log volume formula:
where:
 $\small v$ is the volume of the log in cubic feet;
 $\small L$ is the length of the log in feet; and
 $\small d_\text{m}$ is the diameter at the midsection of the log which is equal to $\small\frac{d_\text{s}+d_\text{l}}{2}$, where:
 $\small d_\text{s}$ is the diameter at the smaller end of the log in feet; and
 $\small d_\text{l}$ is the diameter at the larger end of the log in feet.
Using our log weight calculator
Determining the weight of wood in the shape of a log or board is made easy using our log weight calculator. Here are the instructions on how to use our calculator:

Choose the shape of wood you have — either a log or board.

Select the tree species that you are considering from the dropdown selection in the "Species" field. Choosing a species locks in the density value of your wood. You can enter a specific wood density by selecting the last dropdown option for the "Species" field.

Input the dimensions of your wooden log or board. Entering these values automatically finds the volume of the wood. At this time, the weight per piece of log or board will also be already displayed.

If you have multiple wood quantities with the same dimensions, enter their quantity to calculate their total weight. If you have these wood pieces organized in a stack, you can measure your stack and enter its width and height in our calculator. That is after you select the "I know the... stack dimensions" option in our tool. 🙂
The importance of knowing how to calculate the weight of a log
As with other materials in construction, knowing the weight of a material aids in logistical considerations and in assessing whether or not equipment can carry the load.
Since we cannot always have a weighing scale around us, knowing how to calculate the weight of a log using the measurements we can find onsite, whether with the help of our wood weight calculator or through manual calculations, can sometimes save the day.
Want to learn more?
If you're splitting your wood for firewood and want to know how much you've got, you might find our cord of wood calculator interesting and useful.
What is green weight?
Green weight is a term for the weight of freshly cut wood. Because green wood (or freshly cut wood) still contains lots of moisture in itself, it has a different density and, thus, a different weight compared to dried wood.
How do I measure the diameter of a log?
To properly take measurements of a log, follow these easy steps:

First, measure the smallest diameter of your log with a measuring tape.

Then, move on to the biggest diameter of your log.

Don't forget to note them down!

Find the average of your log's diameter:
(smallest diameter + biggest diameter) / 2

That's it!
Which type of wood is best for outdoor furniture?
Teak, Black Locust, Acacia, California Redwood, and Ipe are some of the many weatherresistant types of wood. Consider buying your outdoor furniture made with these types of wood, or even build one yourself!
How much English oak can be carried by a pickup truck?
A typical pickup truck can carry up to 453.6 kg (1,000 lbs). Since the density of oak happens to be quite high, your pickup truck would be able to hold up to 3 logs of English oak with the average diameter of 17.5 in (44.45 cm) and a length of 3.3 ft (100 cm).
Anyhow, the number of oak logs your pickup truck could handle will highly depend on the measurements of each log, as well as whether your log is green or dried.