Log Weight Calculator – Estimate Wood Log Weight Online

Wood Specifications:

Species:

Smallest End d_s:

cm ▾

Length L:

cm ▾

Largest End d_l:

cm ▾

Stack Dimensions

Stack Width:

cm ▾

Stack Height:

cm ▾

Log Weight Calculator:

The log weight calculator helps to know how much a log weighs based on its species, wood specifications, and dimensions (length & width). The tool also provides you with the exact volume of logs, the number of logs/boards that could fit in a stack, and the stack's overall weight.

How to Use the Log Weight Calculator?

The calculator provides results for both “Log” and “Board”.

If you select Log:

Select its species
Enter the measured diameters & length in the designated blanks
For stack calculations, enter its maximum height & width

If you select Board:

Again, select the species
This time, you need to enter the board width, thickness, and length
For the stack, the inputs remain the same as the aforementioned

What Is Log Weight?

The log weight is the total weight of a wood log based on its size, wood species, and moisture content. It helps to determine how heavy a log is before handling, shipping, or processing.

How Much Does a Log Weigh?

The weight of the log varies because of the four factors that include:

1. Log Dimensions:

A larger diameter means a higher weight
Longer logs increase weight proportionally

2. Wood Species:

Oak, Maple, Pine, Cedar, etc.

3. Wood Density:

Denser woods weigh more.

4. Moisture Content:

Green wood vs. dry wood.

Green Wood vs. Dry Wood:

Green Wood	Dry Wood
The wood, which is recently cut, contains a high amount of moisture content	The dry wood lost its moisture because of air drying or kiln drying
Contains a high weight because of its water content	Comparatively low weight because of the removal of moisture content
Common in logging and forestry operations	Common in construction, woodworking, and furniture making
Weight can change as the wood dries	Weight remains more stable over time

How to Calculate Log Weight?

Formula to Calculate Log Weight:

The first step in calculating log weight is the ‘green’ density. If you know this, then you can use the following formula to get accurate weight output:

W = V × ρ

Where:

W = Log weight (lb)
V = Log volume (ft³)
ρ = Green wood density (lb/ft³)

Assuming the Log Is a Perfect Cylinder:

V = π × (D ÷ 2)<sup>2</sup> × L

Where:

Diameter = Diameter of the log (ft)
Length = Length of the log (ft)

Assuming the Log Is a Tapered Cylinder:

Average Diameter = (d₁ + d₂) ÷ 2

Then:

V = π × (Average Diameter ÷ 2)² × L

And:

W = V × ρ

d₁ = Diameter from the thinner end of the log
d₂ = Diameter from the thicker end of the log

Step-by-Step Example:

Find the weight of a 12-ft Red Oak log with a 16-inch diameter.

Step 1: Convert the diameter to feet.

16 in = 1.33 ft

Step 2: Calculate the volume.

V = π × (1.33 ÷ 2)<sup>2</sup> × 12

V ≈ 16.67 ft³

Step 3: Calculate the weight using the density of Red Oak (≈ 63 lb/ft³).

W = 16.67 × 63

W ≈ 1,050 lb

Answer: The estimated weight of the log is approximately 1,050 pounds.

Calculating log weight manually can be time-consuming. Use our wood weight calculator to get a quick and accurate estimate based on your log's dimensions and wood species.

Common Uses of Log Weight Calculations:

Log weight calculations are widely used in various transportation, forestry, and woodworking applications. Here are some common real-life uses:

Transportation Planning:

Determining truck load limits
Calculating trailer load capacity
Planning safe and efficient log transportation

Forestry Operations:

Estimating harvested timber weight
Planning logging activities
Selecting appropriate machinery and equipment

Sawmill Processing:

Planning log storage requirements
Managing material handling operations
Estimating processing and inventory needs

Firewood and Woodworking Projects:

Estimating material requirements
Planning wood storage and handling
Calculating the weight of logs before cutting or processing

Green Log Weight Chart by Wood Species:

Due to varying green density, the moisture content of each tree species is not the same. This can be confirmed by the following wood weight chart that provides the green densities of almost all major tree species around the global market:

Species	Density lb/ft³	Species	Density lb/ft³
Alder, red	46	Magnolia ev.	59
Apple	55	Maple, red	50
Ash, green	47	Maple, Silver	45
Ash, Oregon	48	Maple, sugar	56
Ash, white	48	Oak, black	62
Aspen, quaking	43	Oak, Cali. black	66
Bald cypress	51	Oak, English	52
Basswood	42	Oak, live	76
Beech	54	Oak, pin	64
Birch, paper	50	Oak, post	63
Birch, Yellow	57	Oak, red	63
Butternut	46	Oak, scarlet	64
Cedar, incense	45	Oak, white	62
Cedar, western red	28	Osage orange	62
Cherry, black	45	Pecan	61
Chestnut	55	Persimmon	63
Chinaberry	50	Pine, loblolly	53
Cottonwood	49	Pine, lodgepole	39
Elm, American	54	Pine, longleaf	55
Fir, Douglas	39	Pine, ponderosa	46
Fir, noble	29	Pine, slash	58
Fir, white	47	Pine, sugar	52
Gum, black	45	Pine, white	36
Gum, red	50	Poplar, Yellow	38
Hackberry	50	Redwood coastal	50
Hemlock eastern	49	Sassafras	44
Hemlock western	41	Spruce, Red	34
Hickory Shagbark	64	Spruce, Sitka	32
Honey locust	63	Sweetgum	55
Horse chestnut	41	Sycamore	52
Larch	51	Tamarack	47
Locust, black	58	Walnut, black	58
Locust, honey	61	Willow	32

Is Log Weight the same as Board Feet?

Log Weight vs. Board Feet:

The Log weight measures mass, while Board feet measure lumber volume/yield. They are both useful in forestry and lumber planning.

After estimating the weight of a log manually or using our log weight calculator, you can use our Board Foot Calculator to instantly estimate how much lumber the log may produce.

FAQ’s:

Can two Logs of the Same Size have Different Weights?

Yes, it can happen because of species and moisture differences in the wood log.

Why is log weight important for transportation?

It is very helpful in avoiding the overloading of trucks and trailers.

Which Type of Wood Is Best for Outdoor Furniture?

Out of the best natural wood materials, Ipe and Teak are the two most widely used wood types for furniture manufacture. Other types include black Locust, Acacia, and California Redwood. All these woods are known for their ultimate durability, beauty, and strictly tested weather resistance.

How Much Does a 10-Foot Oak Log Weigh?

A 10-foot Oak Log will approximately weigh about 3,629.3 pounds.